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PHYSICS

Note: Only some important 1, 3, 5 & 10 mark questions given from all units in this material.

Question paper design Unit

Weightage marks

Part - I 1 marks MCQ

Part - II 3 marks V SA

Part - III 5 marks SA

Part - IV 10 marks LA

1

25

4

2

1

1

2

20

1

3

2

0

3

20

2

1

1

1

4

25

4

2

1

1

5

25

4

2

1

1

6

25

4

2

1

1

7

15

2

1

2

0

8

25

4

2

1

1

9

30

3

4

1

1

10

20

2

1

1

1

Total

230

30

20

12

8

5X1=5

5 X 3 = 15

3 X 5 = 15

Maximum no of problems

Numerical problems total marks: 5 + 15+ 15 = 35

FOR 2012-2013 batch students add March, June and October-12 question paper along with this material

ONE MARK – BLUE PRINT S l . No

UNITS

No. of Q u s. 3 0

1

ELECTROSTATICS

4

2

CURRENT ELECTRICITY

1

3

EFFECTS OF ELECTRICITY CURRENT

2

4

ELECTRO MAGNETIC INDUCTION AND A/C

4

5

ELECTRO MAGNETIC WAVES AND WAVE OPTICS

4

6

ATOMIC PHYSICS

4

2

www.tnschools.co.in 7

DUAL NATURE

2

8

NUCLEAR PHYSICS

4

9

SEMI CONDUCTOR DEVICES

3

10

COMMUNICATION SYSTEMS

2

Volume - I One mark questions Unit-1. ELECTRO STATICS Total number of one mark questions from this chapter - 4 Hint– Normally March question paper 2 questions chance from Text book self evaluation.

1.Book Questions: (Refer Page No.40-42) 1. 2.

3. 4.

A glass rod rubbed with silk acquires a charge of +8 × 10-12 C. The number of electrons it has gained or lost 5 x 10 7 lost The electro static force between two point charges kept at distance d apart, in a medium εr = 6, is 0.3 N. The force between them at the same separation in vacuum is 1. 8 N 1 Electric field intensity is 400 Vm at a distance of 2m from a point charge. It will be 100 Vm-1 at a distance 4 m (Mar 07) Two point charges +4q and +q are placed 30cm apart. At what point on the line joining them the electric field is zero? 20 cm from the charge 4q

5.

A dipole is placed in a uniform electric field with its axis parallel to the field. It experiences neither a net force nor a torque (Mar 06, 07 , Oct 07)

6.

A If a point lies at a distance x from the midpoint of the dipole, the electric potential at this point is proportional to

(mar 11)

7.

Four charges +q, +q, -q and –q respectively are placed at the corners A, B, C and D of a square of side a. the electric potential at the centre O of the square is zero (Oct 06)

8.

Electric potential energy (U) of two point charges is

(Mar 09,

June 10 & 11)

9.

The work done in moving 500µc charge between two points on equipotential surface is zero (June 07,10, Mar 08,10,oct 11) 10. Which of the following quantities is scalar? Electric potential (June 06 & 08, Mar 09, oct 10 & 11))

11. The unit of permittivity is C2 N -1 m -2 (Oct 08, mar 08, june 11) 12. The number of electric lines of force originating from a charge of 1micro coulomb is 1.129 x 10 11 13. The electric field outside the plates of two oppositely charged plane sheets of charge density σ is zero (Mar 06 & 11, jun 11, Oct 09) 14. The capacitance of a parallel plate capacitor increase from 5µF to 60µF when a dielectric is filled between the plates. The dielectric constant of the dielectric is 12 (June 08, Oct 10) 15. A hollow metal ball carrying an electric charge produced no electric field at inside the sphere points. (June 06, Mar 10)

2. Additional Questions:

3

www.tnschools.co.in Note: Prepare one marks f rom f rictional electricity, coulomb’s law,

electric f ield, electric lines of force, electric f ield intensity, dipole in unif orm electric f ield, electric potential energy and equipotential surf ace, gauss law and its applications, dielectric and polarization effect, capacitor in series and parallel and Van De Graff generator and Prepare unit based questions for Electric f ield intensity, electric f lux, permittivity, capacitance, electric dipole moment etc. 1. The unit of electric field intensity is NC-1 (or) VM-1 Nm2

(Oct-06, June-08, Mar 09) C-1 (Mar 06, June 09 Mar 11)

2.

The unit of electric flux is

3.

An electric dipole is kept in a non-uniform electric field it experiences a force and a torque (Mar 08,Oct 08) The work done in moving 4µc charge from one point to another in an electric field is 0.012J. The potential difference between them is 3000 V (Mar 06) Torque on a dipole in a uniform electric field is maximum when angle between P vector and E vector is 90° (June 06,Oct 09) Potential energy of 2 equal negative point charges of magnitude 2µc placed 1 m apart in air is 0.036J (June 06)

4. 5. 6. 7. 8.

The value of permittivity of free space is (Oct 06)

The principle used in lightning conductors is corona discharge (Oct 06)

9. Unit of electric dipole moment is Coulomb metre (cm) (Mar 07) 10. Which is not a dielectric Gold (June 07) 11. The electric potential energy of an electric dipole in an electric field is –PE cosθ. (Mar 07)

12. The direction of electric field at a point on the equatorial line due to an electric dipole is Parallel to the axis of the dipole and opposite to the direction of dipole moment (June 07) 13. When an electric dipole of dipole moment P is aligned parallel to the electric field E then the potential energy of the dipole is given as -PE (June 08) 14. A capacitor of capacitance 6µF is connected to a 100 V battery. The energy stored in the capacitor is 0.03J (Mar 08) 15. The equivalent capacitance of 2 capacitors in series is 1.5µƒ. The capacitance of one of them is 4µƒ. The value of capacitance of the other is 2.4 µƒ (Oct 07 & 09) 16. The law that governs the force between electric chargers is Coulomb’s law (Oct 07) 17. Quantization of electric charge is given by q = ne (Oct 08) 18. An example of conductor is human body (Oct 08) 19. The magnitude of the force acting on a charge of 2 x 10-10C placed in a uniform electric field of 10 Vm-1 is 2x10-9N (Mar 09) 20. The torque (τ) experienced by an electric dipole placed in a uniform electric field (E) at an angle (Ø) with the field is PE sin Ø (June 09)

21. The negative gradient of potential is electric field intensity (June 09)

22. When a point charge of 6μC is moved between 2 points in an electric field, the work done is 1.8 x 10-5J. the potential difference between the 2 points is 3V (Oct 09) 23. Van de Graff generator is used to accelerate both protons and deuterons. 24. The number of electric lines of force originating from a charge of 1micro coulomb is 1.129 x 105 (Oct 07)

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www.tnschools.co.in 25. The capacitance of a parallel plate capacitor increases from 5μF and 50μF, when the dielectric is filled between the plates, the dielectric constant of the dielectric is 10. (June 09) 26. 3 Capacitor of capacitance, 1μF, 2μf, 3μF, are connected in series. The effective capacitance of a capacitor is 6/11μF. (Mar 10) 27. An electric dipole of moment vector p is placed in a uniform electric field of intensity vector E at an angle θ with respect to the field. The direction of the torque is Perpendicular to the plane containing Vector p and E. (Mar 10) 28. Electric field intensity at a distance r due to a infinitely long straight charged wire is directly proportional to 1/r. (June 10) 29. The ratio of electric potential at point 10cm and 20cm from the centre of an electric dipole along its axial line is 4:1. (June 10) 30. The intensity of electric field at a point is equal to the force experienced by a charge q. (oct 10) 31. N capacitors each of capacitance C are connected in series. The effective capacitance is n c. (oct 11) 32. A non-polar dielectric is placed in an electric field (E). its induced dipole moment acts in the direction of E . (oct 11) 33. A dielectric medium is placed in an electric field. The field induced inside the medium acts opposite to electric field. (jun 11) 34. The intensity of the electric field that produces a force of 10-5N on a charge of 5micro coulomb is 2N C-1 (mar 11) 35. If the medium between the two charges is replaced by air, thn the force between them increases. 36. The practical units of capacitance are µ F and pF. 37. Capacitance of a capacitor is independent of both the charge q and potential v. (oct 10) 38. Dielectric is also called as insulator

39. A device not working with the principle of electrostatic induction is microwave oven. 40. ‘Action of points’ is used in lightning conductor and vande graff generator.

Unit-2. CURRENT ELECTRICITY Total number of one mark questions from this chapter - 1 Hint– Normally less chance from Text book self evaluation.

1. Book Questions: (Refer Page No.74-75) 1. 2. 3. 4. 5.

A charge of 60 C passes through an electric lamp in 2 minutes. Then the current in the lamp is 0.5 A The material through which electric charge can flow easily is Copper (Oct 07) The current flowing in a conductor is proportional to drift velocity A toaster operating at 240V has a resistance of 120Ω. The power is480 W (June 10) If the length of a copper wire has a certain resistance R, then on doubling the length is specific resistance will remain the same (Oct 06, June 08, Oct 09, Mar 10, oct 11, mar 11)

5

www.tnschools.co.in 6. 7.

When two 2Ω resistances are in parallel, the effective is 1Ω (Oct-08, june 11)

In the case of insulators, as the temperature decreases, resistivity increases (Mar 08 & 09) 8. If the resistance of a coil is 2Ω at 0°C and  = 0.004/°C, then its resistance at 100°C is 2.8 Ω 9. According to Faraday’s law of electrolysis, when a current is passed, the moss of ions deposited at the cathode is independent of resistance 10. When n resistors of equal resistance (R) are connected in series, the effective resistance is nR.

2. Additional Questions:

Note: Prepare one mark f rom Drif t velocity, current density, super conductivity, combination of resistors, temperature dependence of a resistance, internal resistance of a cell, Wheatstone bridge, metrebridge, potentiometer, Faraday’s law, electric cell, and prepare unit based questions f or current, mobility, current density, resistance, conductance, specif ic resistance, electric energy, electrochemical equivalence etc.. 1. 2. 3. 4. 5. 6. 7.

Expression for current density is J = 1/ A The unit of conductance is mho Transition temperature of mercury is 4.2 K. (June 09) The unit of conductivity is mho m -1 (June 07) Resistance of metal wire of length 10cm is 2Ω. If the wire is stretched uniformly to 50cm the resistance is 50 Ω (Mar 06) The colour code on a carbon resister is red – red black. The resistance of the resistor is 22 Ω (June 06) The brown ring at one end of a carbon resistor indicates a tolerance of 1% (Mar 07)

8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24.

Drift Velocity in metals is the order of 0.1 cms-1 Unit of current density is Am-2. The cell which supplies intermittent current is Leclanche cell. The e.m.f of Leclanche cell is 1.5 V The e.m.f of freshly charged lead acid accumulator is 2.2 V The internal resistance of a secondary cell is low. Ohms law is true for Conductors only. The relation between current and drift velocity is I=nAVde (O 10) Unit of mobility is m2V-1s-1 Unit of electrochemical equivalent is Kgc-1 The core of a caron resistor is made of ceramic The tolerance of carbon resistors without a colour ring is 20% A material with negative temperature coefficient of resistance is called thermistor. Due to ageing, the internal resistance of a cell increases The temperature coefficient o manganin is low. The electrodes used in voltaic cell are cu,zn. Electrolyte used in lead-acid accumulator is dilH2SO4.

Unit-3. EFFECTS OF ELECTRIC CURRENT Total number of one mark questions from this chapter - 2 Hint– Normally March question paper 1 question chance from Text book self evaluation.

1. Book Questions: (Refer Page No.117-119) 1.

Joule’s law of heating is H = VIt

(Mar 08)

6

www.tnschools.co.in 2. 3. 4.

Nichrome is used as heat element because it has high specific resistance. (June 06 & 08) Peltier coefficient at a junction of thermocouple depends on the temperature of the junction. (June 09, Oct 10) In a thermo couple, the temperature of the cold junctions 20°C. The neutral temperature is 270°C. The temperature of inversion is 520°C. (Mar 10, June 08, Oct 08)

5.

What is the equation of Biot-Savart law?

6.

Magnetic Induction due to an infinitely long straight conductor placed in a medium of permeability μ is μI/2πa. (june 11)

7.

In a tangent galvanometer, for a constant current, the deflection is 30°. The plane of the coil is rotated through 90°. Now, for the same constant current, the deflection will be 0°. (June 07) The period of revolution of a charged particle inside a cyclotron does not depend on the velocity of the particle. (mar11) The torque on a rectangular coil placed on a uniform magnetic field is large when the number of turns is large. Phosphor – bronze wire is used for suspension in a moving coil galvanometer because it has small couple per unit twist. (Oct 09) Of the following devices, which has small resistance? ammeter of range (0 – 10)A. (June 06, Mar 09) A galvanometer of resistance G ohm – is shunted with S ohm. The effective resistance of the combination is Ra then which of the following statements is true? Ra is less than both G and S. An ideal voltmeter has infinite resistance.(June 10, Oct 07, june

8. 9. 10. 11. 12.

13.

11).

.(M10)

2. Additional Questions: Hint: Prepare one marks f rom Joule’s law, seeback effect, peltier effect, Thermopile, Tangent Galvanometer, Lorentz f orce, Cyclotron, Torque experienced by a current loop, Galvanometer, Sensitivity and conversion of galvanometer and prepare unit based question f or (Peltier effect, Pettier coeff icient, Thomson Coeff icient, magnetic induction, reduction f actor of T.G.. etc. ) Unit of Thomson coefficient volt / °C. To convert a galvanometer in to a voltmeter by connecting a high resistance in series. (Mar 06) 3. Thermopile works on the principle of See back effect. (Oct 07) 4. The direction of magnetic field due to solenoid is given by Right hand palm rule. 5. The converse of see back effect is Peltier effect. (Mar 07) 6. Cyclotron cannot accelerate electrons. 7. Melting point of tungsten is 3380°C. 8. Unit of reduction factor of tangent galvanometer is ampere. (Mar-06) 9. In a Thermo couple, the temperature of cold junction is 20°C; the inversion temperature is 600°c. then neutral temperature is 310°C. (Oct 06) 10. The torque experienced by a rectangular current loop placed perpendicular to a uniform magnetic field is zero. (Mar 07) 11. Sb - Bi pairs of metals thermo couple the e.m.f is maximum. (June

1. 2.

-07)

12. Fuse wire is an alloy of lead and tin. (Mar 08) 13. Thermo pile is used to detect thermal radiation (Oct 08)

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www.tnschools.co.in 14. The resistance of the filament of a 110W, 220V electric bulb is 440 ohm (Mar 09) 15. The magnitude and direction of the magnetic Lorentz force is given by

(June 09)

16. Unit of Peltier coefficient is volt (Oct 09) 17. In a TG a current 1A produces a deflection of 30˚ the current required to produce a deflection of 60˚ is 3A. (Oct 06) 18. The unit of magnetic induction is Tesla and Wb/m2 19. Positive Thomson effect is observed in Ag, Sn, Cu, Zn, Cd, Sb, and Au. 20. Thomson effect for lead is zero 21. For a given thermocouple, the neutral temperature is a constant (June 10) 22. When the number of turns (n) in a galvanometer is doubled, current sensitivity increases twice (Oct 10) 23. Cyclotron is used to accelerate protons, deuterons and αparticles. 24. Negative Thompson effect is observed in Fe, Bi, Ni, Pt, Co, Hg. 25. Tangent Galvanometer works on the principle of Tangent law. 26. Tangent Galvanometer and Moving Coil Galvanometer is a device for measuring current. 27. Fuse wire has high resistance ( oct 11) . 28. In a thermocouple the temperature of the cold junction is -30 and the neutral temperature is 270 . The temperature of inversion is 570

29. An electron is moving with a velocity of 3x10-6vms-1 perpendicular to a uniform magnetic field of induction 0.5T. The force experienced by the electron is 2.4x10 30. Filament of an electric bulb is usually enclosed in a glass bulb containing inert gas at low pressure 31. Position o the metal in the thermo electric series depends on temperature. 32. Electric filament lamp is working on the basis of joules heating effect. 33. Biot-savart law expressed in an alternative way is called Ampere circuital law. 34. A long closely wound helical coil is called solenoid. 35. The magnetic polarity of a current carrying solenoid given by end rule. 36. In cyclotron,the dee’s are connected to high frequency RF oscillator. 37. Th coil in moving coil galvanometer is suspended by a phosphorbonze wire.

Unit- 4. ELECTRO MAGNETIC INDUCTION AND AC Total of one mark questions from this chapter – 4. Hint: Normally in march question papers, 2 questions are asked from self evaluation.

1. Book Questions: (Refer Page No.156-157)

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1.

14.

Electromagnetic induction is not used in room heater

In an A.C circuit the average value of current is zero.

(Mar 09, oct 11)

(Mar 06 & 08, June 07, 08 & 09,oct 08, oct 11)

2.

3. 4.

2. Additional Questions:

A coil of area of cross section 0.5m2 with 10 turns is in a plane which is perpendicular to as uniform Magnetic field of 0.2 Wb/m2. The flux through the coil is 1Wb (June 09, Mar 10) Lenz’s law is in accordance with the law of conservation of energy (Mar 07 & 08, mar 11) The self induction of a straight conductor is zero (June 10, Mar 07

Hint – Prepare one marks f rom Electromagnetic induction, magnetic flux, Lenz’s law, generator rule, self inductance, mutual induction, method of producing induced e.m.f , A.C Generator (Single & Three Phase), Eddy currents, Transf ormers, r.m.s value of A.C, L.C.R in series, Power in a A.C Circuit, Choke Coil. Prepare unit based questions f or Henry, Inductive reactance, Self inductance, Coeff icient of mutual inductance, inductive reactance, capacitive reactance, Magnetic f lux, Inductance. Etc.

& 09, oct 11)

5. 6. 7. 8. 9.

The unit Henry can also be written as VSA-1, WbA-1, Ωs (June 06, june 11, oct 11) An e.m.f of 12V is induced when the current in the coil changes at the rate of 40A s1 the coefficient of the coil is 0.3H (Oct 09,10) A DC of 5A produces the same heating effect as an AC of 5A rms current (Oct 08, Mar 09) Transformer works on AC only (June 10, Mar 07, Oct 07, mar 11) The part of the AC generator that passes the current from the coil to the external circuit is Brushes. (mar 10)

10. In an AC circuit, the current I = I%sin e.m.f e = E◦ sin

by

π.

lags behind the

(Oct 06)

11. Which is the following cannot be stepped up in a transformer? Input power (June 08, Oct 09) 12. The power loss is less in transmission lines when voltage is more but current are less (Oct 06) 13. Which of the following devices does not allow D.C to pass through capacitor (Jun 09, Mar10, Oct 10, june 11)

1.

For a D.C circuit the value of capacitive reactance (XC) is Infinity

2.

In a transformer eddy current loss is minimised by using laminated core made of Stelloy. (Mar 08) The reactance offered by 300 mH inductor to an AC supply of frequency 50Hz is 94.2 Ω (Oct 07) The rms value of an A.C voltage with a peak value of 311V is 220v. (Oct 07) The core used in audio frequency chokes is iron. (Oct 07 & 09) Q factor on A.C circuit contains a resistance R. inductance L and

(June 08)

3. 4. 5. 6.

capacitor C is 7.

(June 08, Mar 09)

In a 3 phase AC generator the 3 coils are fastened rigidly together and are displaced from each other by an angle 120° (Oct 08)

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www.tnschools.co.in 8. Generator rule is Fleming is right hand rule. (June 07,Oct 06) 9. Induction motors are used in Fans. 10. Choke coils are commonly seen in fluorescent tubes. 11. The angle between the area vector A and plane of area A is

.

(Mar 06,

June 09)

12. If flux associated with a coil varies at the rate of 1 wb/min then the induced e.m.f is

.

(Mar 06)

13. In an A.C circuit with an inductor current lags voltage by (June 06 mar 11)

14. In LCR circuit when XL = XC, the current is in phase with the voltage (Mar 07) 15. In step up transformer the input voltage is 220V and output voltage is 11KV. The ratio of number of turn’s primary to secondary is 1:50. (Oct 06) 16. In LCR series circuit at resonance Impedance is equal to R. (Oct 09) 17. The average power consumed over one cycle in an A.C circuit is E rms I rms cos (Mar 06) 18. In LCR circuit, phase difference between current and voltage is 30˚. The reactance of the circuit is 17.32 Ω. The value of resistance is 30 Ω (June 06) 19. In a A.C circuit with capacitor only if the frequency of the signal is zero, then the capacitive reactance is infinity. (June 07) 20. A power of 11,000 W is transmitted at 220 V. the current through line wire is 50 A (Mar 08) 21. The rms value of an A.C is 70.7% of the peak value. (Mar 10)

22. An emf of 12V is introduced when the current in the coil changes from 2A to 6A in 0.5s. The coefficient of self inductance of a coil is 1.5H. (June 06) 23. In step up transformer the input voltage is 220V and output voltage is 11KV. The ratio of number of turn’s secondary to primary is 50:1. (June 07) 24. In R.L.C Circuit, at resonance current is in phase with voltage. (Oct 08) 25. In an A.C. circuit, average power consumed is 200W and the apparent power is 300W. The power factor is 0.66. (June 10) 26. In an R.L.C circuit, at resonance XL = XC. (Oct 10) 27. The effective value of alternating current is Io/√2 (June 10) 28. Electromagnetic induction is not used in Filament Bulb and Room Heater. (Oct 08) 29. In a three phase AC generator,three coils are inclined at an angle of 120°. 30. The frequency of A.C for guided rocket is 400HZ. 31. The number of lines of orce crossing unit area normally is magnetic induction. 32. In low power AC dynamos magnetic field is provided by permanent magnets. 33. The average power of an AC is also called true power of the circuit. 34. Choke coils are commonly seen in fluorescent tubes. 35. A circuit will have flat resonance,if the Q value is low. 36. Flux loss can be minimized by using shell type of core.

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Unit-5. ELECTROMAGNETIC WAVES & WAVE OPTICS Total of one mark questions from this chapter -4 Hint – Normally March question papers 1 question from Text book self evaluation.

1. Book Questions: (Refer Page No.206-208) 1. 2. 3. 4.

In an electromagnetic wave power is transmitted in direction perpendicular to both fields (June 09) Electromagnetic waves are transverse. (Oct 09, 10, june 11) Refractive index of glass is 1.5 Time taken for light to pass through a glass plate of thickness 10cm is 5 X 10-10sec In an Electromagnetic wave the phase difference between electric field E and magnetic field B is zero (June 06,10 & 08, Oct 08, Mar 09, mar 11).

5. 6.

7.

8. 9.

Atomic spectrum should be pure line spectrum (Mar07, oct 09) When a drop of water is introduced between the glass plate and plane convex lens in Newton’s ring system, the ring system contracts. (Mar 06,08, June 10,07,june 11) A beam of mono chromatic light enters from vacuum into a medium of refractive index µ. The ratio of the wavelengths of the incident and refracted waves is µ:1 If the wavelength of the light is reduced to on fourth, then the amount of scattering is increase by 256 times (June 09, Mar10)

10. The path difference between two monochromatic light waves of wavelength 4000A° is 2x10-7m. The phase difference between them is π. 11. In young’s double slit experiment the third bright band for wavelength of light 6000A° coincides with the fourth bright band for another source in the same arrangement. The wavelength of the source is 4500A°. (Oct 10) 12. A light of wavelength 6000A° is incident normally on a grating 0.005m wide with 2500 lines. Then the maximum order is 3. (Mar 08)

13. A diffraction pattern is obtained using a beam of red light. What happens if the red light is replaced by blue light? diffraction pattern become narrower and crowded together (June-07 &08, mar 11, june 11).

14. The refractive index of the medium for the polarising angle 60° is 1.732 or 5 (Mar 10, Oct 08)

2. Additional Questions:

Hint: Prepare one marks f rom Electromagnetic waves, electromagnetic spectrum and its uses, types of spectra, theories of light, scattering of light, Raman effect, Huygen’s principle, total internal ref lection, phase difference and path difference, Young’s double slit, Newton’s ring, Diffraction grating, Polarization, Double refraction, optical activity. Prepare unit based questions for Grating element, Specif ic rotation, Ref ractive index... Etc.

In Newton’s ring experiment the radii of mth and (m+4)th dark rings are respectively

5mm and

7mm. what is the value of m? 10 (Oct 09)

1.

In Raman effect if the scattered photon gains energy. It gives rise to anti stokes line. (Oct 08) 2. In case of Fraunhofer diffraction, the wave front undergoing

11

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3. 4. 5. 6.

diffraction is plane wave front. (Oct 08) The phenomenon of light used in the formation of Newton’s rings is interference. (Oct 07) An example for uniaxial crystal is tourmaline (or) Quartz. (, Oct 07 &06)

In Raman Effect, the spectral line with lower frequency than the incident frequency is stokes line. (Oct 07) The optical rotation does not depend on intensity of light-used (Oct 07)

The transverse nature of light waves is demonstrated only by the phenomenon of polarization. (June 10, Mar 08) 8. Velocity of light in a medium is 2.25 x108 Ms-1 the refractive index of the medium will be 1.33. (June 08) 9. The polarizing angle for water is 53° 4’. If the light is incident at this angle on the surface of water the angle of refraction is water is 36° 56’. (June 08) 10. The rays used to study the molecular structure are IR rays. 11. Wavelengths of sodium D1, D2 lines of lines 5896°A, 5890°A. (Mar 06) 12. Electromagnetic waves used to study structure of nucleus gamma rays. 13. Radiations used in detection of forged documents are uv rays. 14. Double refraction was discovered by Bartholinus. 15. New types of Polaroid are prepared in which thin films of polyvinyl alcohol are used. 16. IR lamps used in physiotherapy. (Mar 07) 17. Spectrum used for making dye is band absorption. 18. Unit grating element is metre. (June 06) 19. The existence of electromagnetic waves was confirmed experimentally by Hertz (Mar 06) 20. When a ray of light is incident on a glass surface at polarizing

21. 22.

23.

7.

24.

angle of 57° 5’. The angle between the incident ray and the reflected ray is 115°. (June 06, Mar 06 & 08) Electric filament lamp gives rise to continuous spectrum. (June 07 Mar 08) A ray of light is incident on a glass surface such that the reflected ray is completely plane polarised. The angle between the reflected ray and refracted ray is 90˚ (Mar 09 jun 11) Soap bubbles exhibit brilliant colour in sunlight due to interference of light (Mar 09) The radii of Newton’s dark rings are in the ratio √1 : √2 : √3. (Mar 09)

25. In the grating formula sin Ø = Nmλ, the unit of N is metre

-1

(June 09,10 )

26. The ratio of the radii of the 4th and 9th dark rings in Newton’s ring experiment is 2:3 (June 09) 27. Calcium chloride is not an optically active material (Oct 09) 28. Unpolarised light passes through a tourmaline crystal. The emergent light is analyzed by an analyzer when the analyzer is rotated through 90˚the intensity of light varies between maximum and zero. (Mar 06)

.

29. Velocity of the electromagnetic waves is given by c =

(June 06)

30. In Young’s double slit experiment, the separation between the slits is halved and the distance between the slits and the screen is doubled. Then the fringe width is quadrapled. (June 07) 31. If C is the velocity of light in vacuum, the velocity of light in a medium with refraction index μ is .

(Oct 06)

32. Gamma rays are not an electromagnetic wave.

(Oct 06)

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www.tnschools.co.in 33. In radar Micro wave is used. 34. X-rays are used as diagnostic tool in medicine. 35. Continuous spectrum depends only on temperature of the source. 36. Molecule produce Band spectrum and atoms produces line spectrum. 37. In Fraunhofer diffraction the wave front undergoing diffraction is plane wave front. (Oct 08) 38. In Raman Effect, the incident photon makes collision with an excited molecule of the substance. The scattered photons give rise to Anti Stoke’s Lines. (Mar 10)

45. A point source inside a refracting crystal produces Spherical wave front corresponding to ordinary ray. 46. Calcite and ice are examples for uniaxial crystals (oct 11) 47. Mica, topaz, selenite and aragonite having two optic axes and are examples for biaxial crystals. 48. Polaroids are widely used as polarizing sun glasses. 49. Polaroids are used to eliminate the head light-glare in motor cars.

39. Refractive index of glass is 1.5. The velocity of light in glass is 2 x 108 m/s. (Mar 10 &11)

50. Polaroids are used to improve colour constrasts in old oil paintings.

40. The dark lines found in the solar spectrum are called Fraunhofer lines. (Oct 10)

51. Nicol prism serves as a polariser and also an analyser. 52. Huygen’s principle helps us to locate the new position and shape of the wave front at any instant.

41. A ray of light travelling in a rarer medium and reflected at the surface of a denser medium automatically undergoes a path difference of λ/2. (Oct 10)

53. Raman Spectrum is used to analyse the chemical constitution.

42. The existence off electromagnetic waves confirmed experimentally by Hertz. (oct 11)

54. Physical properties of electromagnetic waves are determined by their wavelength.

43. In a pile of plates arrangement, the angle between the incident light and the reflected plan polarized light is 57.5˚ (oct 11)

55. Frequency band of radiowaves used in cellular phones is ultra high frequency.

44. The nature of the wave front corresponding to extraordinary ray inside a calcite crystal is elliptical. (june 11)

56. UV-radiations are used to destroy the bacteria and for sterilizing surgical instruments.

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www.tnschools.co.in 57. Delayed fluorescence is known as phosphorescence. 58. In the interference pattern, the energy is conserved but it is redistributed.

3.

According to Bohr’s postulates, which of the following quantities take discrete values? angular momentum (Mar 07, June 07, Oct 07, 08 & 09)

4.

The ratio of the radii of the first three Bohr orbit is 1:4:9.(Mar 10,

08, June 07, Oct 11, June 11)

5.

The first excitation potential energy or the minimum energy required to excite the atom from ground state of hydrogen atom is 10.2eV. (Oct 10, Mar 08)

6. 7. 8.

Volume II (One Mark) Unit-6. ATOMIC PHYSICS Total of one mark questions from this chapter - 4 Hint – Normally march question papers 1 question from Text book self evaluation.

1. Book Questions: (Refer Page No.46-48) Vol.II 1. 2.

The cathode rays are a stream of electrons.(mar-11) A narrow electron beam passes undeviated through an electric field E = 3x10 V/m and an overlapping magnetic field B = 2x10-3 Wb/m2. The electron motion, electric field and magnetic field are mutually perpendicular. The speed of the electron is 1.5 x 10 -7 ms -1.

9. 10. 11. 12. 13. 14. 15.

According to Rutherford atom model, he spectral lines emitted by an atom is Continuous spectrum (Oct 11) Refer Textbook Page No.47 in Vol.II. The elliptical orbits of electron in the atom were proposed by Sommerfeld. (Oct 10) X-ray is phenomenon of conversion of kinetic energy into radiation (Mar 07,10, June 09, June 11) In an X-ray tube, the intensity of the emitted X-ray beam is increased by Increasing the filament current (June 06, Mar 11) The energy of photon of characteristic X-ray from a Coolidge tube comes from an atomic transition in the target. (June 08) A Coolidge tube operates at 24800V. The maximum frequency radiation emitted from Coolidge tube is 6x10 18 HZ (Oct 10,11) In hydrogen atom, which of the following transitions produces spectral line of maximum wavelength 6→5 (Oct 06 & 09, Mar 08) In hydrogen atom, which of the following transitions produces spectral line of maximum frequency 2 →1 (June 06) After pumping process in laser the number of atoms in the excited state is greater than the no of atoms in the ground state.

16. The chromium ions doped in the ruby rod absorbs green lights. (Mar 06, 09, 10, Oct 08, June 06, 08, 10)

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www.tnschools.co.in Additional Questions – Hint: Prepare one marks from cathode rays, Canal rays, Thomson and Milliken’s Experiment, Bohr’s Atom Model, Spectral series of Hydrogen Atom, Somerf ield atom model, X-Rays – production, Diffraction of X-Rays, X-Ray spectra, Ruby laser, He-Ne laser, Application of laser and maser. Prepare unit based questions for (Rydberg’s constant, wave numbers etc.) 1. Number waves per unit length is known as wave number (Oct 08) 2. Three dimensional image of an object can form by holography. (Oct 08)

Unit of Rydberg’s constant is m-1 (Value 1.094x10-7 m-1) (O 07,J 09) For the 1storder x ray diffraction, the wave length of x ray is equal to lattice spacing at glancing angle of 30° (Oct 07) 5. A Coolidge tube operates at 18600.V the maximum frequency of x radiation emitted from it is 4.5 x 1018 Hz (Oct 07)] 6. Maser materials are paramagnetic ion and ammonia gas. (J 08) 7. Wave length of laser beam emitted from ruby laser is 6943A°. 8. Fine holes are drilled in diamonds using laser beam. 9. Wave number is defined as the number of waves in a distance one metre. (Mar 06, Oct 08) 10. The energy electron in the first orbit of hydrogen atom is -13.6 eV. Its potential energy is -27.2 eV. (Jun 06) 11. Somerfield model for a given value of n the number of values can take is n. (Oct 06, mar 11) 12. Ratio of areas enclosed by 1st 3 Bohr orbits of H atom is 1:16:81. 3. 4.

(Oct 06)

13. Crystal diffracts monochromatic x-rays, angle of diffraction for 2nd

order is 90°,1st order 30° (Mar 07) 14. If R is Rydberg’s constant, the minimum wavelength of hydrogen spectrum is

. (June 07)

15. The spectral series of hydrogen atom in UV-region are called Lyman series. (June 08) 16. If the minimum wavelength of X-rays produced in a Coolidge tube is 0.62 . the operating potential is 20Kv. (Mar 06,08) 17. In a discharge tube, the source of positive rays (canal rays) is gas atoms present in the discharge tube. (Mar 09) 18. The minimum wavelength of X-rays tube at 1000 Kv is 0.0124Ǻ (Mar 09)

19. Ionization potential energy of hydrogen atom is 13.6 eV (Mar 09) 20. When an electric field is applied to an atom each of the spectral lines split into several lines. This effect is known as stark effect (June 09)

21. In holography, which of the following is recorded on the photography film phase and amplitude (Oct 06 & 09, June 07 &11)

22. The direction of viscous force in Millikan’s oil drop experiment is opposite to the direction of motion of the oil drop(jun 11) 23. Canal rays were discovered by Goldstein. 24. The value of e/m is 1.7592 x 1011C Kg-1 25. 1eV = 1.602 x 10-19 J. 26. The device used to determine the wavelength of X-rays is Bragg’s X-ray spectrometer. 27. Roentgen discovered X-rays

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www.tnschools.co.in 28. The ratio of Ne and He gases used in He-Ne laser is 4:1. 29. Wavelength of D1 and D2 lines emitted by Sodium Vapour lamp is 589.6 nm, 580nm (Mar 06) 30. In Somerfield atom model, for principle quantum number, n=3, the subshell represents circular orbit is 3d.(Mar 10) 31. A Coolidge tube operates at 24800V, the maximum wavelength

to Rydbegs constant.The line is series limit of lyman series. 39. Boh’s model fails because it explain spectral lines o hydrogen atom and hydrogen like atom. 40. The light fom a LASER source is monochromatic because all the photons are in phase.

41. The glancing angle of monochromatic X-ray off wavelength 1A˚

32. If “c” is the velocity, γ is the frequency and λ is the wavelength

is 30˚.The lattice space between the second order reflection is 2x10 -10 m. 42. The radius of second obit of hydrogen atom is 2.12A˚.

of radiation, then its frequency is defined as the number of

43. In millikan’s oil drop experiment,two plates separated by 5cm

of X-Ray radiation emitted from the Coolidge tube is 0.5 x 1010m

(June 09)

waves produced in a period of T second. (Oct 10) 33. e/m ratio of Cathode ray particles is independent of nature of electrodes and gas used. (June 10) 34. If R is Rydberg’s constant, the shortest wavelength of paschen series is 9/R.(June 10) 35. In Milliken’s experiment, the plates are kept at a distance of 16mm and are maintained at a potential difference of 10000V. The electric field is 6.25 x 105 V/m. (June 10) 36. Principle of Maser action is population inversion followed by stimulated emission. 37. If 𝛄 is the frequency of characteristic X-Ray line emitted by a target element of atomic number Z, then the moseley’s law is 𝛄 ∝Z2 (oct 11)

38. The wave number of a spectral line of hydrogen atom is equal

in air are at a potential of 5V,then the electric field is 100v/m. 44. The charge on an oil drop is 12.82x10

-19

C, then the number

of elementary charge 8.

UNIT-7. DUAL NATURE OF RADIATION, MATTER AND RELATIVITY

Total of one mark questions from this chapter -2 Hint- Normally, in March question papers, 1 question from Text book self evaluation.

1. Book Questions: (Refer Page No.72, 73) Vol.II

1. A photon of frequency v is incident on a metal surface of threshold frequency vo. The kinetic energy of the emitted photo electron is h(v-vo) (Oct 07,08) 2. The work function of a photo electric material is 3.3 eV. The threshold frequency will be equal to 8 x 1014 Hz (Mar 08, June 11June11)

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www.tnschools.co.in 3. The stopping potential ofa3 a metal surface is independent of intensity of incident radiation. 4. At the threshold frequency, the velocity of electron is Zero. ( Oct 06,09, Mar 09) 5. The photo electric effect can be explained on the basis of Quantum theory of light (Mar 10,June10) 6. The wavelength of the matter wave is independent of Charge (June 08, Oct 09, Mar 11) 7. If the kinetic energy of the moving particle is E, then the De Broglie wavelength is λ=h/√2mE 8. The moment of electron having wavelength 2Ao is 3.3 x 10 -24 Kgms-1 (June 07) 9. According to relativity, the length of a rod in motion is less than its rest length. (June 06,07,09,1o) 10. If 1 Kg of substance id fully converted into energy , then the energy produced is 9 x 1016 J(Oct 10, 11)

ADDITIONAL QUESTIONS

Prepare one marks from photoelectric effect, stopping potential, threshold frequency, laws of photoelectric emission, Einstein’s photoelectric equation, photoelectric cells and applications, matter waves, electron microscope, relativity, special theory of relativity, Einstein’s mass- energy equivalence. 1. The work function of a metal is 6.626 x 10-19 J. Threshold 15 frequency is 1 x 10 Hz (Mar 07) 2. If the radius of third Bohr orbit in hydrogen atom is r, then the de Broglie wavelength of electron in this orbit is

(Mar 06)

3. An electron of mass m and charge ‘e’ accelerated from rest

through a potential of V volt, then its final velocity is √ 2Ve/m

(Oct 08)

4. When a material particle of rest mass ‘mo’ attains the velocity of light its mass become infinity (Oct 07)

5. Photo electric emission is an instantaneous process. 6. Concept of matter waves was proposed by de Broglie. 7. Particle that has energy with zero rest mass is photon. (Mar08) 8. An un-accelerated frame of reference is called inertial frame. 9. According to Special theory of relativity the only constant in all frames is Velocity of light. (Oct 06, Mar 07,09) 10. Electron microscope is operated in high vacuum. 11. The value of stopping potential when the frequency of light is equal to the threshold frequency is Zero. (Mar 06) 12. Two photons, each of energy 2.5 eV are simultaneously incident on metal surface. Work function of metal is 4.5 eV. Then from the surface of the metal not a single electron will be emitted. (June 06)

energy but zero mass. (June 08) 2 14. Einstein’s photoelectric equation is hv= ½ mv max +W (June 09) 15. De Broglie’s concept confirms Bohr’s postulates. 16. Electron microscope works on the principle of wave nature of moving electron. (Mar 10) 17. The de Broglie wavelength of electron accelerated with a potential V is λ=h/√2Vem(Oct 10 &11) 18. Application of photoelectric cells is used in temperature sensor, cinematography, measure light intensity. 19. The material having low function is Caesium oxide. 20. Photoelectric cell is used in opening and closing of door automatically. 13. Photon has

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www.tnschools.co.in 21. The operating potential in an electron microscope is about 60,000 V. 22. A photon o energy 2E is incident on a photosensitive sufface o photoelectric work unction E.The maximum kinetic energy of photoelectron emitted is E (june 11) 23. A graph is drawn taking frequency of incident radiation along the X-axis and its stopping potential along the Y-axis.The nature off the graph is a straight line. (mar 11) 24. In photocell the light energy is converted into electric energy. 25. Current produced by a photoelectric cell is proportional to the intensity of the incident light 26. When the frequency of incident radiation increases the value of stopping potential will increases. 27. The energy required to bring the electrons of maximum velocity to rest is eV0. 28. The cathode of a photoemissive cell is coated with low work function material. 29. Newton’s laws are not valid in non-interial frames. 30. The clock in moving space will appears to go slower than the clock on the earth. 31. The frequency of photon having an energy of 413eV is 10 17HZ.. 32. The wave number of light of wavelength 5000 A0 is 2x106m-1. 33. The de-broglie wavelength of an electron having KE of 20 ev is 0.275nm. 34. If an electron is accelerated by a potential of 54kv,then its debrogile wavelength is 1.67A0. 35. Th de-broglie wavelength of proton accelerated through a potential difference of 823v is 10-12m.

UNIT-8.NUCLEAR PHYSICS Total no of one mark questions from this chapter – 4 Hint- Normally March question papers 2 question from text book self evaluation.

1. Book Questions: (Refer Vol.II Page No. 116-118)

1. The nuclear radius of 4Be8 nucleus is 2.6 x 10-15 m 2. The nuclei 13Al27 and 14Si28 are example of isotones. (Mar 07,10,June 07,09, Oct 07, Mar 08) 3. The mass defect of certain nucleus is found to be 0.03 amu. Its binding energy is 27.93 MeV. 4. Nuclear fission can be explained by Liquid drop model.(june 11) 5. The nucleons in a nucleus are attracted by nuclear force. 6. The ionization power is maximum for α-particles.(Oct 10,11,jun10) 7. The half life period of a certain radio active element with disintegration constant 0.0693 per day is 10 days. (Oct 08,07) 8. The radio isotope used in agriculture is 15P32. (June 06,08,Oct 08,09, Mar 11) 9. The average energy released per fission is 200 MeV. 10. Explosion of atom bomb is based on the principle of uncontrolled fission reaction. (June 09,10,Mar 10. 11) 11. Anaemia can be diagnosed by 26Fe59. (Mar 07,10,June 07,09,11) 1 9 8 1 9 8 12. In the nuclear reaction 80Hg + X→79Au + 1H1, X stands for Neutron (June 08, Mar 09) 13. In β-decay neutron number decreases by one. (Mar 09,Oct 09) 14. Isotopes have same proton number but different neutron number (Oct 10).

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www.tnschools.co.in 15. The time taken by a radioactive element to reduce to 1 times its original amount is its mean life. (Mar 06) 16. The half life period of N13is 10.1 minute. Its life time is infinity. 17. Positive rays of the same element produce two different traces in a Bainbridge mass spectrometer. The positive ions have different mass with same velocity. 18. The binding energy of 26Fe56 nucleus is 493 MeV. (June 10, Oct 07, jun 11) 19. The ratio of nuclear density to the density of mercury is about 1.3 x 1013

ADDITIONAL QUESTIONS

Prepare one marks from classification of nuclei, properties of nucleus, Brainbridge mass spectrometer, nuclear force, radioactivity, radioactive displacement law and disintegration, neutron, artificial radioactivity, G.M. counter, nuclear fission, nuclear reactor, nuclear fusion, cosmic rays, elementary particle and prepare unit based questions for activity, radiation exposure, electron volt, etc.

1. Safety amount of radiation exposure on human body is 250 milliroentgen per week. 2. Energy radiated from surface of the sun is 3.8 x 1026 J/S 3. Energy of fast neutrons is between 0.5 MeV to 10 MeV 4. Rays having high penetrating power is gamma rays. (Oct 06) 2 3 3 5. Only operating reactor in the world using 92U as fuel is Kamini. (Oct 0 7 ,0 9 ) 6. In nuclear reactor, moderator is Heavy water. (Mar 07) 7. Which of the following particle is a leptons electron. (Mar 06) 8. Nuclear force is due to the continuous exchange of particles called mesons (Mar 06,09, Oct 09)

9. The particles which exchange between the nucleons and responsible for the origin of the nuclear force are mesons (June 07 Oct 09) 10. In the nuclear reaction 7N14 + 0n1 → X + 1H1 the element x is 6C14 (Mar 06) 11. One amu is equal to 1.66 x 10-27 Kg (or) 1.66 x 10-24 g (or) 931 MeV. (June 06,09,Oct 06 & 08) 12. In the following nuclear reaction 13Al27 +2He4 → X + on1. The element X is 15P30 (Oct 06) 13. The numbers α and β particles emitted when isotope 92U238 undergoes α and β decays to form 82Pb206 are respectively 8,6 (Mar 07) 14. Liquid sodium is not a moderator. (June 07) 15. 11Na24 is used to defect the presence of block in blood vessels. (Mar 08) 16. If the nuclear radius is 2.6 x 10-15 m then mass number will be 8 (June 08) 17. Slow neutrons are neutrons having energies between 0 eV to 1000 eV. (June 08) 18. The half life of a radioactive element is 300 days. The disintegration constant of the radioactive element is 0.00231/day. (Mar 09) 19. The mean life of Radon is 5.5 days. Its half life is 3.8 days (June 09) 20. The reciprocal of decay constant is 1.44 times its half life period. 21. To determine the age of a wooden sample C14 is used. 22. The unit of radiation exposure is Roentgen. 23. Half life period of C14 is 5570 years. 24. The energy produced in proton-proton cycle is 26.7 MeV. 25. The name of cosmic ray was given by Millikan. 26. Neutrino and antineutrino are associated with β-emission.

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www.tnschools.co.in 27. The name of meson was given by Yukawa. 28. An element zXA undergoes three α-decays and four β-decays and gets converted to an element Y. The mass number and atomic number of the element Y are respectively A-12,Z-2 (June 07, Mar 08) 29. The mean life and half life T1/2 of a radioactive element are related as τ= T1/2/0.6931 (Mar 08) 30. The time taken by a radioactive element , its reduce to e -1/2 times its original amount is its mean life period (June 06) 31. Find the emitted particle in the nuclear reactions 4Be9 + 2He4 → 6C12 + X. X stands for neutrons. (Mar 10) 32. Particle that has no charge and no mass and travels with the velocity of light is Photons (Mar 09) 33. Which of the following particle belongs to Baryon group Proton (Mar 10) 34. According to the law of disintegration N=No e-λt the number of radioactive atoms that have been decayed during a time of t is No-N (June 10) 35. The coolant used in fast breeder reactor is liquid sodium (Oct 10) 36. The half life period of N13 is 10.1 minute. Its life time is Infinity. (Oct 10) 37. Hydrogen bomb is based on the principle e of nuclear fusion (Oct 11) 38. The cosmic ray intensity is a maximum at a latitude of 900 (Oct 11) 39. The nuclear force between a proton and another proton inside the nucleous is short range (Oct 11) 40. When mass number increases,nuclear ,density remains constant (jun 11) 41. Ionising power of alpha ray is 1000 times greater than gamma rays and 100 times greater than eta rays. (mar 11)

42. 7N14 and 6C13 are isotones. (mar 11) 43. The ratio of radii of two nuclei is 1:2.Th ratio of their mass number is 1:8. 44. Nuclear force is a Short range force 45. In pressurized heavy water reactors,the fuel used is uranium oxide. 46. Radio-iodine is used to locate brain tumours. 47. Radio-phosphorous is used in the treatment of skin diseases. 48. The half-life period of an isolated neutron is about 13minutes. 49. All radioactive samples are handled by a remote control pocess. 50. The natural radioactive gas is radon. 51. Cockcroft Walton accelerator is an example for electro static accelerator. 52. In fast breedor reactors no moderator is requied. 53. Leptons are lighter particles having mass equal to or less then about 207 times the mass of an electrons. 54. Energy of the primary cosmic rays is in order of 108 mev. 55. 6C14 and 8O16 are examples of isotones. 56. Neutrons with energies from 0 to 1000 ev are called as slow neutrons.

Unit - 9. Semiconductor Devices Total number of one mark questions from this chapter is - 3 Hint – Normally March question paper chance 1 question from Text book self evaluation.

1. Book Questions: (Refer Page No. 175-177 in Vol.II) 1. The electrons in the atom of an element which determine its chemical and electrical properties are called Valence electrons

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www.tnschools.co.in 2. In a N-type semiconductor there are immobile positive ions 3. The reverse saturation current in a PN junction diode is only due to minority carriers (June 09, Oct 11) 4. In the forward bias characteristic curve, a diode appears as an ON switch (Oct 11) 5. A avalanche break down is primarily dependent on the phenomenon of Collision (mar 11) (Oct 2007) 6. Colour of light emitted by a LED depends on types of Semiconductor material (June 06,10 & Oct 08,10, Jun11) 7. The Emitter base junction of a given transistor is forward biased and its collector base junction is reverse biased. If the base current is increased then its IC will increase. 8. Improper biasing of a transistor circuit products distortion in the output signal. 9. An oscillator is an amplifier with feed back (Mar 08 &

15.

(Jun 10, Mar 06)

2. 3.

June 09,10, Oct 10)

10.

Colpitts oscillator circuit Capacitive feedback is used

(June 08)

11. Since the input impedance of an ideal operational amplifier is infinite its input current is zero. 12. The following arrangement performs the logic function of AND gate (Book back refer text book Vol.II, P.No 176) (Oct 06&08, June 06, Mar 10, Oct 11)

13. If the output Y of the following circuit is 1 the input ABC must be 101 (Refer text book Vol.II, P.No 176) (June 09, Oct 06) 14. According the laws of Boolean algebra, the expression (A+AB) is equal to A. ( Mar 09,11)

The Boolean expression

4. 5. 6. 7. 8.

can be simplified as

-

Additional Questions -

Hint: Prepare one marks f rom Insulators, Semi-conductors, Conductors, PN Junction diode, L.E.D, Junction transistor, Transistor amplif ier, Feedback in amplifier, Logic Gates, DeMorgan’s theorem, OP-AMP circuit, Electronic measuring instrument. Also refer example problems in Page No. 173 – 175 (9.3, 9.4, 9.5(June 08), 9.6) and Book back problems in Page no. 178-179. (9.51, 9.52, 9.55, 9.56) 1. In CE amplifiers, the phase reversal between input and output voltages is 180° (June 2008) In junction the emitter region is heavily doped since emitter has to supply to the base majority carriers. (Oct 2007) A logic gate which has on output ‘I’ when the inputs are complement to each other is EXOR. (Oct 2007) The potential barrier of germanium PN junction is 0.3V. (June 06) Condition for an amplifier to become an oscillator is A=1/β (M 06) Zener diode working in the breakdown region can act as voltage regulators. OP – Amp consists of 20 transistor 11 resistors, 1 capacitor Boolean expression for NAND gate is Y = (Oct 09 & June 06)

9.

CRO works on the principle that the beam of electron can be deflected both in electric and magnetic field 10. Forbidden energy gap for germanium is of order 0.7eV (Mar 06 & Oct 06)

21

www.tnschools.co.in 11. Forbidden energy gap for silicon is of order 1.1eV (Oct 06,10,Mar 08, 09)

12. Barkhausen condition for maintenance of oscillation is β= (Mar 07 & Oct 09)

13. A logic gate for which there is ‘low’ output only when both the inputs are ‘high’ is NAND. (June 2007) 14. In CE single stage amplifier, the voltage gain at mid-frequency is 10. The voltage gain at upper cut-off frequency is 7.07 (Oct06&09) 15. An example for non-sinusoidal oscillator is multi vibrator (Mar 09) 16. LED is a forward biased PN junction diode which emits visible light when energized. 17. The forbidden energy gap for conductor is zero. (Mar 10) 18. Bi and As are examples for donor atom. (Mar 08) 19. In CE Transistor circuit, the base current of the transistor is 50micro Ampere. And the collector current is 25 micro Ampere. Then the current gain is 500.(Oct 08) 20. In the PIN configuration IC 741, PIN 3 represents Non Inverting Input.(Mar-10) 21. Potential Barrier for a silicon PN junction is 0.7V.(June-06) 22. The phase reversal between th input and output voltages in single CE amplifier is π (Oct 11) 23. A logical gate or which there is an output only when both the inputs are zero is NOR (june 11) 24. In a transistor,the value of (1/α-1/β) is equal to 1 (Mar 11) 25. Amount of impurity to e added to a intrinsic semiconductor is off the order o 100ppm. 26. Rectifier efficiency of half wave rectifier is approximately 40.6%.

27. The output of an half-wave rectifier is unidirectional and pulsating. 28. Zener current is independent of applied voltage. 29. Zener diode is a reverse based,heavily doped semiconductor PN junction diode. 30. The value of alpha in any transistor lies between 0.95 to 0.99. 31. Voltage divider bias is the most widely used method providing bias and stabilization to a transistor. 32. Three amplifier have gains 10,50and 80 respectively, when thy a connected in cascade the oval gain is 40000. 33. The resistivity o a semi conductor lie approximately between 10-2 and 104 ohm metre at room temperature. 34. The separation between valance band and conduction band is known as forbidden energy gap. 35. The energy gap between valence band and conduction band is o the order of 10 ev. 36. The resistivity of insult approximately lies between 1011 and 1016 ohm metre. 37. The efficiency of the bridge rectifier is approximately 81.2% 38. The input impedance of the transistor in CE mode is very high, and the output impedance of the transistor in CE mode is low. 39. The integrated circuits are available in dual-in-line package. 40. Circuits which are used to process digital signals are called logical gates. 41. In op-Amp pin out configuration pin-6 represents output terminal, pin-8 represents no connection.

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www.tnschools.co.in 42. In summing amplifier provides an output voltage equal to the algebraic sum of the input voltage. 43. The negative sign indicates that op-Amp is used in the inverting mode. 44. Fluorescent screen is used to study the beating of heart in cardiology.

Unit -10. Communication Systems Total number of one mark questions from this chapter is - 2 Hint – Normally March question paper chance 1 question from self evaluation so see all 8 questions given in text book page-215,216(vol-2) 1.

High frequency waved follows ionospheric propagation

(March

2006, June 2006)

2. 3. 4. 5. 6. 7.

Main propose of modulation is to transmit low frequency information over long distance efficiently The amplitude modulation the amplitude of the carrier wave varies in accordance with the amplitude of the modulating signal

In amplitude modulation, the bandwidth is twice the signal frequency (June 2007) In phase modulation both the phase and the frequency of the carrier wave varies. R/F channel in a radio transmitter produces high frequency carrier waves (Mar 2007, 10,Mar 09,Oct 11) Purpose of dividing each frame into 2 fields so as to transmit 50 views of picture per second is to avoid flicker in the picture (June 2008)

8.

Printed documents to be transmitted by fax are converted into electrical signals by the process of Scanning (Mar08,11, June 08,09,10,11 & Oct 08

10,11)

Additional Questions – Hint: Prepare one mark from Propagation of Electromagnetic waves, AM modulation, FM Modulation, Radio transmission and reception, Television, Monochrome Picture tube, Modem, Fax, Wire and Cable, Fibre Optic & Satellite communication. Skip distance is the shortest distance between a point of transmission and the point of reception. (Oct 2008) 2. Audio frequency range is 20 Hz to 20000 Hz (Mar 2008) 3. The first man made satellite Sputnik (Oct-07) 4. An analog signal is a continuous varying voltage (or) current. 5. Twisted pair cable the wire is twisted to minimize external noise 6. Modem device convert digital signals into analog signal (Mar7, Oct9) 7. Scanning high negative potential is used as Blanking pulse 8. Cu is an inexpensive metal easily made into wire. 9. Working principle of Radar is radio echoes 10. In TV, blanking pulse is applied to control grid (Mar 06,11, Oct 1.

09)

11. In AM super heterodyne, the local oscillator frequency is 1.245 MHZ. the turned station frequency is 790 KHz (June 2006) 12. Radio waves after refraction from different parts of ionospheres on reaching the earth are called as sky waves. (Oct 2006,Mar 10)

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www.tnschools.co.in 13. Principle used for transmission of light signals through optical fiber is total internal reflection (Oct 2006,Mar 10) 14. In interlaced scanning time taken to scan one line is 64 µs (June 07) 15. In Vidicon camera tube, the front face of the target plate or image plate facing the light is coated in tin oxide 16. Function of modem is modulation and demodulation 17. In FM super heterodyne receiver, the intermediate frequency is 10.7 MHz. (Oct 10) 18. In radar to locate the direction of the target directional antennas are used. 19. In India the frame repetition rate is at 25 frames per second. 20. The long distance radio communication is possible through sky waves propagation. 21. In the AM super heterodyne receiver system the value of the intermediate frequency is equal to 455KHZ.(june-09,11) 22. In an AM receiver the local oscillator frequency is 2750KHZ. The tuned is station frequency is 2295KHZ(june-10). 23. In TV transmission, sound signals are frequency modulated. 24. The human voice or music contains waves with a frequency range of 300-3000HZ. 25. Receiving antenna converts the electromagnetic energy into electrical signal. 26. If 900KHZ station is turned, then the local oscillator will have to produce a frequency of 1335KHZ. 27. In FM broadcast, the frequency derivation of sound signal is 75KHZ. 28. Videocon camera tube works on the principle of photoconductivity.

29. When exposed to light, the resistance of the photoconductive material decreases. 30. In Videocon camera tube on the back of the target plate is coated with the photosensitive material antimony tri sulphide. 31. Three synchronizing pluses are used for scanning. 32. In interlaced scanning, the vertical scanning frequency is 50 fields per second. 33. The greatest technical problem in analog communication is noise. 34. Satellite orbiting the earth will be geo-stationary when it is at the height of 36,000 km from the earth. 35. In actual practice the band width used for uplink transmission by the satellite is 5.725-7.075 GHZ. 36. Modulation factor determines the strength and quality of the transmitted. 37. The electric energy available from the microphone is very low. 38. All the modern receivers utilize the super heterodyne circuit. 39. Radar systems are used for the safe landing of air crafts. 40. Modems are placed at both ends of the communication circuit. 41. Twisted pair cable is the simplest and lowest cost cable.

3 MARK – BLUE PRINT Sl. No 1

UNITS ELECTROSTATICS

No. of Q u s. 2 0

Q.No

2

31, 32

24

www.tnschools.co.in 2

CURRENT ELECTRICITY

3

33, 34, 35

3

EFFECTS OF ELECTRICITY CURRENT

1

36

4

ELECTRO MAGNETIC INDUCTION AND A/C

2

5

ELECTRO MAGNETIC WAVES AND WAVE OPTICS

6

4.

State Gauss’ Law in electrostatics Page No.17,18 (June & Oct 06,Mar,09,mar11)

5.

What is meant by Dielectric Polarization? Page No.25(Oct 09,Oct 11)

37, 38

6.

Why it is safer to be inside a car than standing under a tree during

2

39, 40

7.

ATOMIC PHYSICS

2

41, 42

7

DUAL NATURE

1

43

8

NUCLEAR PHYSICS

2

44, 45

9

SEMI CONDUCTOR DEVICES

4

46, 47, 48,49

10

COMMUNICATION SYSTEMS

1

50

lightning.

Page No.21 (Mar 06,10,June 06 & 09)

Define ‘coulomb’ on the basis of coulomb’s law, explain it in vector form? Page No.3,4

8.

(Mar 10, June 07,10,Oct 10,11)

Define relative permittivity and permittivity. How they are related. Page No.4

9.

What is the unit of capacitances? Define it .What is capacitor? Page No.22 (Mar 09)

10. What are conductors and Insulators? Give example Page No.2 11. Give any three properties of electric line of force? (June 10) Page No.7 12. What is meant by electrostatic shielding? Where it is used. Page No.21 (Mar 08)

Unit -1. Electrostatics

13. Define electric flux. Give its unit. Page No.17 (June 08)

To Write 31 and 32

One question chance from the textbook self evaluation. Refer Page No. 42, 43.

1.

Define electric potential at a point.

2.

What do you mean by “Additive nature of charge”? Give an example. Page No.3

3.

(Mar 07 & June 09 ) Page No.12

07)

15. Explain the working of microwave oven. Page No.12 (June 08) 16. What is meant by corona discharge (or) action of points? What are its advantages? Page No.30 (June 07, Oct 08)

17. Difference between polar and non-polar molecules. Page No.24

(Oct 07)

What is a polar molecule? Give any two example?

14. Define Potential difference? Give its unit. Page No.12

Page No.24 (Mar

18. Write the application of capacitor. Page No.27 (Oct 07, Mar 11) 19. Distinguish between electric potential and potential difference. Page No.12

25

www.tnschools.co.in 20. What is Gaussian surface and equipotential surface? Page No.16 21. What is an electric dipole? Define electric dipole moment. Page No.8 (Oct 09, June 11)

22. Define electric field intensity at a point in an electric field. What is its unit? Page No.6

24. What is a non-polar molecule? Give example (Oct 06, June 11,Oct 10 ) Page No.24

25. What is electric potential energy? Page No.11 26. What is meant by electric polarization? page no 35 to 39. 1.7, 1.8,

1.11, 1.12, 1.13, 1.14, 1.15 (model in Oct 08)

28. Problems: from book back, page no 43 to 45.

1.46, 1.47 1.50, 1.53

1.55, 1.58, 1.59 (Mar 08)

UNIT – 2. CURRENT CLECTRICITY To Write 33, 34 and 35 Note: One Question chance from book back and one Problem. Refer Page No. 75-76.

1. 2. 3. 4.

6. 7. 8.

23. Define coulomb. (Mar 06) Page No.4

27. Problems: from text book example,

5.

State Ohm’s law. Page No.48 (Mar 10,06, Oct 07 & 09) Mention any 3 application of super conductor? Page No.51 (Oct 06 & 07,June 06 & 07) Distinguish between electromotive force and potential difference. Page No.62 (June 07,Oct 08, June 11) State Kirchhoff’s voltage law and current law? Page No.55,56 (June 06, Mar 07 & 08, June 11)

9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24.

Define drift velocity. Give its unit Page No.47 (Mar 10,07, Oct 08 & 10, June 09, Oct 11, Mar 11) Define mobility of electrons. Give its units. Page No.47 (Oct 06,10, Mar 08 & 09) State Faraday’s laws of electrolysis. Page No.63 (Mar 06, Jun 10, Oct 10) Define temperature co-efficient of resistance. Page No.54(June 08, Mar 11) What are the advantages of secondary cells? Page No.68 (Oct 08, 11) State Kirchhoff’s laws and mention the sign convention. Page No.55,56 What is called current density? Is it scalar or vector? What is its unit? Page No.47 What is called super conductivity? Page No.50 Define electric resistivity of a material. Page No.49 Why is copper wire not suitable for potentiometer? Why automobile batteries have low internal resistance? The colour of a carbon resistor is yellow, violet and orange. What is the value of resistance resistor? What is the difference between primary cells and secondary cells? Page No.66.67 Distinguish between electric power and electric energy. Page No.62 (June 08 & 09) State Kirchhoff’s second law for electric network. Page No.56 (Mar 09) Define electro chemical equivalent of a substance. Page No.63 What are the changes observed at transition temperature when the conductor becomes a super conductor? (June 2010) Page No.51 What is called primary cells? Page No.66 List the changes that occur at transition temperature. Page No.51. Define Transition temperature. Page No.51

26

www.tnschools.co.in 25. What is the principle of potentiometer? Page no.60 26. What is meant by charging of secondary cell? Page no.67 27. Problems: from text book example, Page No.69 - 74

2.1(Mar 10, June 11), 2.2, 2.3, 2.4, 2.5 (June 07 & 09, Oct 07,10, Mar 08, Oct 11) 2.6 (Mar 07, Mar09), 2.8, 2-9 (June 08) 2-10 (Oct 06) 2-13. 28. Problems: from Book Back, page no 76 to 77. 2.30 2.31, 2.32(Jun 06), 2.34 (Oct 09), 2.38 (M 07, J 10) 2.39, 2.40. 2.41, 2.42, 2.43

UNIT – 3. EFFECTS OF ELECTRIC CURRENT To Write 36 :normally Q:no :36 is from unit 3 (chance for possible.)

1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13.

Why is nichrome used as a heating element? Page No.81(June 07) In a Galvanometer, increasing the current sensitivity does not necessarily increase the voltage sensitivity. Explain. Page No.106 (Mar 07) Mention the limitations of Cyclotron. Page No.99 (Oct 06, June 10) Define Peltier co-efficient and write its unit. Page No.84 (June 06, June 11) Define Thomson co-efficient. What is its unit? Page No.85 Define seebeck effect. Page No.82 Define Ampere in terms of force. Page No.102 (Mar & June 08, Oct 11) Difference between Peltier effect and Joule heating effect? Page No.82,84 (Mar06) State Joule’s law? Page No.79 State Biot - savart law? Page No.87,88 Define temperature of inversion. Page No.83 State Maxwell’s right hand corkscrew rule. Page No.87 What is Ampere’s circuital law? Page No.92 (Mar 09 )

14. What is neutral temperature of a thermocouple? 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31.

Page No.83 (Oct

08) How is the galvanometer converted into: (a) ammeter (b) voltmeter Page No.106,108 (June 09) How can we increase the current sensitivity of a galvanometer? Page No.106 (Oct 09) What is mean positive Thomson effect? In which elements it can be observed? Page No.85 What are the characteristics of heating elements used in electric heating device? (Mar 10) Page No.81 State Flemming’s left hand rule (Oct 10) Page No.100 What is right hand palm rule? Page No.93 State principle of a cyclotron Page No.97 State the principle of moving coil galvanometer. Page No.103. Why do we connect ammeter in series with the circuits and Voltmeter in parallel with the circuit? Page No.108. State “end” rule. Page No.95 What is magnetic Lorentz force? Page No.95 State tangents law? Page no.91 (Mar 11) What is meant by Thomson effect? Page no.84 What is gyromagnetic ratio? Give its value Page.110 Distinguish between neutral and inversion temperature of a thermocouple Page no.83 Problems: from text book example, page no 112 to 115. 3.2 (Oct 07), 3.4, 3.7, 3.9, 3.9, 3.11, 3.12, 3.13 Problems from book back : Page No.120-121 3.28 , 3.29, 3.32, 3.33, 3.34, 3.38 and 3.39.

UNIT - 4. ELECTROMAGNETIC INDUCTION and A/C

27

www.tnschools.co.in To Write 37 and 38 Normally one question chance from Book back.Refer Page No: 157 and 158 and chance for problem.

1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15.

State Faraday’s laws of electromagnetic induction? Page No.124 (June 06 & 07, Oct 07) Define r.m.s value of alternating current? Page No.141 (June 07, Oct 09) State Fleming’s right hand rule .Page No.125 (Mar 10,07 & 09, June 11, Oct 09) Define quality factor.(or) q- factor. Page No.148(Oct 06, June 11) Mention the methods of producing induced e.m.f. Page No.131 (Oct 10, Mar 06,Mar 11) A capacitor blocks D.C but allows A.C explain. Page No.145,146 (Oct 11) Define power factor? Page No.150 Compare step up and step down transformer. Page No.138 Give difference between AF choke and RF choke. Page No.151(June 08) State Lenz’s law in electromagnetic induction. Page No.124 (June 10, Oct 08) Why a D.C ammeter not read A.C? Page No.141 (Oct 07) What is electromagnetic induction? Page No.122 (Mar 08) Define coefficient of self induction of a coil. Page No.126 (June 09) Define coefficient of mutual induction, Mention its unit. Page No.129 Difference between Self induction and mutual inductance. Page No.125,128

16. If the rate of charge of current of 2As-1. Induces an e.m.f of 10mv in a solenoid. What is the self inductance of the solenoid? Answer: ρ=-L x di/dt. (Formula). ρ =5mH.(repeated problem in model papers)

17. 18. 19. 20. 21. 22. 23. 24. 25. 26.

27.

What is eddy current? Page No.136 Define instantaneous power of an AC circuit. Page No.144 What is inductive and capacitive resistance? Page No.144,145 What are the advantages of ac over dc? Page No.145,146 What are the factors on which the mutual inductance depends on? Page No.129 What do you mean by resonance? What is the use of resonance? Page No.148,149 What is magnetic flux? Give its unit. Page No.122 Define resonant frequency. Page No.148 Define efficiency of a transformer. Page No.138,139 Problems: from text book example, page no: 151 to 153. 4.1,4.2 (June 06, Mar 08 Mar 11, Oct 10,June 10) 4.3 4.4 (Mar 06 & 09) 4.5, 4.6 (Oct 11), 4.7 (June 08 & 09) Problems: from book back, page no 159-160. 44.54, 4.55,4-56,4.57 ,4-63,

UNIT- 5 - ELECTRO MAGNETIC WAVES WAVE OPTICS To Write 39 and 40 Note: Normally one question chance from book back, Page No.208 and one problem chance from either example or book back problems.

1. 2. 3. 4.

Define optic axis of a crystal? What is meant by optical rotation? Page No.199 (June 07,10) What is Tyndall scattering? Page No.173(Mar 07, June 10,09, Oct 10) What is band emission spectrum? Give an example. Page No.168 (Oct 06) Why does the sky appear blue in colour? Page No.173 (June 06)

28

www.tnschools.co.in 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26.

What are emission and absorption spectra? Page No.168,169 (Mar 06) Distinguish between interference and diffraction fringes. Page No.194 (Oct 07) What is meant by specific rotation? Page No.202 (Mar 08, Mar 10) The sun appears reddish during sunrise and sunset. Why? Page No.173 State Rayleigh scattering law. Page No.175 Difference between fluorescence and phosphorescence. Page No.170 What are factors on which optical rotation depends upon? Page No.202 (June08, June 11) What are the conditions for total internal reflection to take place? Page No.180 (Oct 08) What are the characteristics of electromagnetic waves? Page No.163 State Huygens’ Principle. Page No.176(Oct 09, Oct 11) Write any three uses of infrared radiation. Page No.167 (Oct 08) Why is the centre of the Newton’s ring dark? Page No.187 (Mar 09) State the conditions for obtaining clear and broad interference bands. Page No.185 What is total internal reflection? Page No.179 What are Polaroid’s? Mention any three uses of Polaroid’s. Page No.200 What are Newton’s rings? Page No.187 What are electromagnetic waves? Page No.163 What is the principle of super position of waves? Page No.180 Compare ordinary and extraordinary light. Page No.199 Distinguish the corpuscle and photon. Give the conditions for sustained interference. Page No.182 Distinguish between Fresnel and Fraunhofer diffraction. (Mar10) Page No.190,191

27. What are called corresponding points? Page No.191 28. Difference between line spectrum and continuous spectrum. Page 29. 30. 31. 32. 33. 34. 35. 36. 37.

No.169 What are stokes and anti-stokes lines? Page No.173 What are uniaxial and biaxial crystals? Give examples Page No.199 State Brewster’s law. Page No.197 (Mar 11) What do you mean by polarizer and analyzer? Page No.196 What is Raman Effect? Page No.173 State the defects of corpuscular theory. Page No.171 Compare polarized and unpolarised light. Page No.195 Problems: from text book example, Page No.203-205 5.2, (June 06, Mar 11) 5.4(Oct 10), 5.5 (Mar & June 07, Oct 11) 5.6 (Mar 08) 5.7, 5.8 (Mar 06 & 09) Problems: from book back, page no 209. 5.41, 5.44, 5.45 (Oct 06 & 07, June08 & 09, June 11), 5.49 (Oct 09) 5.50,

Volume II UNIT – 6. ATOMIC PHYSICS To Write 41 and 42 Note: One problem and one question (chance)

1. 2. 3. 4.

Who is hologram? Page No.46(Oct 07) Write down the 2 important facts at the Laue experiment on X-ray diffraction. Page No.29 (Oct 07, June 08) State Moseley’s law, write its equation. Page No.33(Mar 07, 08 & 09 &11) What are the characteristics of laser? Page No.35 (Oct 06, June 09,10, Mar 10)

29

www.tnschools.co.in 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29.

Write the principle of Millikan’s oil drop experiment. Page No.5 (June 06) Write the conditions to achieve laser action. Page No.36 (Mar 06, June 07) Explain any one of the drawbacks of Rutherford atom model. Page No.12 (Oct -08) Give 3 industrial uses of laser. Page No.39(June 08) Give 3 properties of cathode rays. Page No.2 State any 3 postulates of Bohr atom model. Page No.21 Give drawback of Thomson’s atom model? Page No.9 Compare spontaneous emission and stimulated emissions. Page No.35 What is meant by normal population? Page No.35 What meant by population inversion. Page No.35,39 Write any 3 applications of laser in medical field? Page No.39 (Mar 08, Oct 09, Oct 11, June 11) What are hard x-rays and soft x-rays? Page No.26 State Bragg’s law. Page No.29 What are continuous x-rays? Page No.31 Define Ionisation potential ? Page No.20,21(Mar 07, June 09, Oct 10) Write any 3 industrial uses of X-Rays. Page No.34 Write short notes on MASER. Page No.40 Define excitation potential energy. Page No.20,21 State the applications of Moseley’s law. Page No.33 State Rutherford’s atom model. Page No.11,12 How does laser light differ from ordinary light? Page No.34 What is meant by energy level diagram? Page No.18 What are the drawbacks of sommerf ield atom model. Page no.24, 25 (Oct 11) How lyman series is formed. Page no.17 Def ine lattice plane (or) cleavage plane.

30. Problems: from text book example, (Vol-2) page no: 41 to 45.

6.1, 6.8, 6.9 (June 10, 06, Oct 10,

6.3, 6.4, 6.7, (Oct 06, Oct 09) 08, Mar 09&11) 6-10. 31. Problems: from book-back, page no 49-50. 6.46(Model paper) 6.49(Mar 06), 6.50(June 07),6.51 6.52(Mar 10)

,

UNIT-7. DUAL NATURE To Write 43 Note: Chance for problem (or) question.

1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14.

Give limitations of electron microscope? Page No.62 (Mar 09,06) What are inertial and non inertial frames of reference? Page No.63 (Oct 06&11, Mar 08) Define threshold frequency? Page No.54 State the postulates of special theory of relativity? Page No.64 (Oct 07, June 09, Mar 11) What are matter waves? Page No.58 Define stopping potential (or) cut-off potential? Page No.53 (Oct 09) Define frame of reference? Page No.63 Define photoelectric work function? Page No.56 What is photoelectric emission? Page No.51 Calculate the threshold wavelength of certain metal of work function 1.8 eV. (Oct 08) What are photo cells? What are the 3 types of photo cells? Page No.57 Mention the uses of Electron microscope (Mar 07) Page No.62 According to classical mechanics, what is the concept of time? (June 10) Page No.63 Mention any 3 applications of Photoelectric cells. Page No.57,58 (Mar 10, Oct 10, June 06)

30

www.tnschools.co.in 15. X-ray cannot be used in electron microscope, why? Page No.60, 61. 16. What are the concept of space and mass in classical mechanics? Page

11. State the laws of radioactive disintegration? Page No.86 12. Write any three properties of neutrons (June 06, Mar 08 Oct 11, June

17.

13. 14. 15. 16.

18. 19. 20.

No.63 How the focal length of electromagnetic lens is adjusted in electron microscope. How photocell is useful in fire alarm. Page no.58 Problems: from text book example, (Vol-2) Page No.68-71 7-1, 7-4, 7-5 (June 07, 08) 7-7, 7-8, 7-9. Problems from Book-back, Refer Page No.74. 7.34, 7.40, 7.41, 7.42

UNIT – 8. NUCLEAR PHYSICS To Write 44 and 45 problem and one question (Chance)

1.

Note:

One

What is the use of a control rod in the nuclear reactor? Mention any two control rods? Page No.100 (Oct 07) 2. Define roentgen? Page No.92 (June 07, Oct 08) 3. What is meant by pair production and annihilation of matter? Page No.107 (Mar 06 & 07, June 06) 4. Write any three conclusions obtain from Binding energy curve? Page No.80 (Oct 06) 5. Define curie. Page No.88 (June & Oct 06, Mar 08, Oct 10, Mar 10) 6. What is α-decay? Give an example. Page No.85 (Mar 06) 7. Define half life period and mean life? Page No.87,88 8. What are primary and secondary cosmic rays? Page No.105 9. What is radio carbon dating? Page No.91 10. What are breeder reactors? Page No.101 (Mar 09)

17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32.

11) Page No.89 What is mass defect? (Oct 10) Page No.79 Define binding energy of nucleus? Page No.79 (Oct 09) State radioactive displacement law? Page No.85 Define critical mass or critical size of nuclear reactor? Page No.97 (Oct 08) What are cosmic rays? At what latitude and altitude the cosmic rays intensity is maximum? Page No.105 (June 10,08) Compare nuclear fission and fusion? Page No.95,103 What are nuclear forces? How do they arise? Page No.82 Write any three properties of nuclear force. Page No.82 (Mar 09,June 08) Define radioactivity. Page No.83 Write a note on leptons. Page No.107 (June 07) What are isotones? Page No.77 How do you classify the neutrons in the terms of K.E Page No.89 (June 09) Write the equation proton-proton cycle can account for steller energy. Page No.104 (Mar 11) What are thermonuclear reactions? Page No.103 State the principle of G.M counter. Page no.94 What is a nuclear reactor? What are the uses? Page No.98,101 (June 11) What are the precautions to be taken by those who are working in radiation laboratory? Page No.93 What do you mean by gamma decay? Give an example. Page No.85,86 Define amu. Page No.78 How are elementary particles classified? Page No.107

31

33. What percentage of a given radioactive substance will be left after 5 half

life period (Mar 11). 34. Calculate the number of atoms in gram of 3Li6? (Oct 11) 35. Problems: from text book example, (Vol-2) page no: 109. 8-1,8-2, 8.3 36. Problems: from Book back, page no 119-120. 8.47, (Oct 8.49, 8.52 (Mar 10), 8.56, 8.57(June 09) 8.58 (Mar Oct09, June10), 8.59, 8.60,

07) 07,

UNIT-9. SEMI CONDUCTOR DEVICES

To Write 46, 47, 48 and 49 Note: Chance one question from Book back and one problem from example (or) self evaluation. Problems may also come from inside the book, based on Logic gates. Difficult to write all four question from this chapter, so prepare well.

1. 2. 3. 4. 5. 6. 7. 8.

What are the advantages of negative feedback? Page No.150 (June 07&08, Oct 07, Mar 11) Give the important parameter of an operational amplifier? Page No.143 (Oct 07) Draw the circuit diagram of AND gate using diodes and resistor. (June 07) Page No.157 Define bandwidth of an amplifier. Page No.147 (Mar 07, Oct 11) What is a light emitting diode? Give any one of its uses. Page No.136 (Mar 07) Draw the circuit configuration of NPN transistor in common collector (C.C) mode. Page No.139 (Mar 06 & 08, Oct 06) Draw the circuit diagram for OR gate-using diodes. Give its truth table Page No.159 (June 06) Define input impedance of a transistor connected in common emitter mode Page No.141 (June 06 &11)

9.

What is an intrinsic semiconductor? Give two examples. Page No.125 (Mar-06) 10. State De - Morgan theorem. Page No.161(Mar 08 & 09,June 10) 11. Define lower cut off frequency and upper cut off frequency? Page No.147 12. Define output impedance of a transistor in? Page No.142 (O 08,09)

13. Define input impedance – mention its uses. Page No.141 14. What is an extrinsic semiconductor Page No.126 (June 06, 08, O10,

Mar 11) 15. What is an integrated circuit, what are the types? Page No.154 (June 08 & 09) 16. What is Meant by doping Page No.125,126 (Oct 08) 17. Draw the circuit for summing amplifier Page No.167 (Mar 09)

18. Give the Barkhausen conditions for oscillator Page No.150 (Oct 07,08, 19. 20. 21. 22. 23. 24. 25. 26. 27.

June 09, Mar 10) Mention any three uses of Cathode Ray Oscillator (CRO) Page No.170 (June 09) Write the different methods of doping a semiconductor Page No.126 (Oct 09) What is Zener diode? Draw its symbol. Page No.135 (Oct 09, 10, 11). Mention any 3 advantages of integrated circuit. Page No.154 (Mar & Oct 06, June 10&11) Define rectifier efficiency. Page No.133 What are universal logic gates? Why are they called so? Page No.161 Compare N-type and P-type semiconductor. Page No.126,127 What is an Ex OR gate? Give its truth table. Page No.159 What is avalanche breakdown? Page No.134

32

www.tnschools.co.in 28. Draw the block diagram of an oscillator and mention the components. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48.

Page No.152,153 What is called feed back? State two types of feedback. Page No.148 Construct AND gate using NOR gate. Page No.157,160 The gain of a amplifier without feedback is 100 and gain with positive feedback is 200, Calculate the feedback fraction (Mar 06) What is Zener breakdown? Page No.135 (Oct 06, June 07, Mar 08) The voltage gain of an amplifier without feedback is 100, If feedback is supplied with a feedback fraction β=0.1, Calculate the voltage gain after feedback. (Oct 06) What is rectification? Page No.132 (Mar 07,09) Draw the energy band diagram of N-type and P-type Semi-conductors. Page No.127,128 (Mar 10) Draw NOT gate using transistor. Page No.158 (June 10, Oct 11) What are the essential components of a LC oscillator? Page No.152 (Oct 10) What is the principle involved in the method of biasing a transistor? Page No.145. Derive the relation between the α and β of a transistor. Page No.140 Define forbidden energy gap. Page No.123 Compare analog and digital signal. Page No.155 Draw different amplifier circuit using OP-AMP. Page no. 168 (June 11) Draw the circuit diagram for inverting amplifier using OP-AMP. Page no.165 (Mar 11) Draw the frequency response curve of the single stage C.E amplifier. Page no.147 What is meant by depletion region of PN Junction diode? Distinguish between forward and reverse bias? What do you mean by regulated power supply? Page no.134 In a transistor emitter and collector cannot be interchanged? why?

49. 50. 51. 52. 53. 54. 55.

What is called operation point? Page no.143 Define current amplification factor. What is an amplifier? Mention its characteristics. What are sinusoidal and non-sinusoidal oscillations? What is LED. Give its 2 uses. Page no.136,137 State important characteristics of OP-AMP? Page no.114 Problems: from text book example, (Vol-2) page no: 172 to 175. 9.2 (Mar 08),9.3 (June 06, Oct 09, 10, Mar 10)9.4 (Mar 11)9.5 (Oct 07),9.8 (June 08) 9.9(Model in J 07) 56. Problems: from Book-back, page no 178 to 179. 9.50 (June 10), 9.51, 9.52(Mar 07, Oct 11), 9-55 (Mar 10), 9.56(Model in Mar 09&Oct 08) 9.57 (June 11)9.58, 9-60(June 09)

UNIT-10. COMMUNICATION SYSTEM To Write 50 Note: Normally less chance for problem from this chapter. Chance from bookback question, Page No. 216, 217. 1. 2. 3. 4. 5. 6. 7. 8.

What is the necessity of modulation? Page No.185 (Oct 07) What is meant by skip distance? Page No.184 (June 07 &09, Mar 08, Oct 10, Mar 11) What are the advantages of digital communication? Page No.209 (Mar 07, June 10) What is fax? Give its uses? Page No.210 (Oct 06) Three applications of radar? Page No.207 (June 06) Define modulation factor Page No.186 (Mar 06, 10, June 08, Oct 09, June 11) What is called phase modulation? Page No.191 Explain geo stationary satellite? Page No.212

33

www.tnschools.co.in 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30.

What are the advantages of frequency modulation? Page No.190(Mar 09) Mention any three advantages of fiber optic communication system Page No.212 (Oct 08) What are the different types of wire and cable used for communication system? Page No.210 What is meant by scanning? Page No.198 What are called blanking pulses? Page No.199 What is an antenna and antennae gain? Page No.191 What are the De-merits of satellite communications? Page No.214 What is meant by Skip zone? Page No.185 What is modulation? What are the different types of modulation? Page No.185 What do you mean by Sky wave (or) ionospheric propagation? Page No.183 What are the advantages and disadvantages of digital communications? Page No.209 What are the advantage and disadvantages of AM? Page No.189 Merits and De-merits of satellite communications. Page No.213-214 State the principle of radar. Page No.206 What are the different types oa radio wave propagation Page no.181 (Oct 11) Define amplitude modulation. Page no. 186 What is called directivity of an antenna. Page no.191 Draw the block diagram of AM radio transistor. Page no.192 What is called duplexer? Page no. 206 What is meant by interfaced scanning. Page no.199,200 Problems: from text book example, (Vol-2) page no: 214. Problem : From book-back: Page No: 217, 10.33 (Model)

5 - MARK – Blue PRINT Sl. No

UNITS

No. of Q u s. 1 2

Q.No

1

ELECTROSTATICS

1

51

2

CURRENT ELECTRICITY

2

52, 53

3

EFFECTS OF ELECTRICITY CURRENT

1

54

4

ELECTRO MAGNETIC INDUCTION AND A/C

1

55

5

ELECTRO MAGNETIC WAVES AND WAVE OPTICS

1

56

6

ATOMIC PHYSICS

1

57

7

DUAL NATURE

2

58, 59

8

NUCLEAR PHYSICS

1

60

9

SEMI CONDUCTOR DEVICES

1

61

10

COMMUNICATION SYSTEMS

1

62



5 MARKS Hint: C.P Compulsory problem given in board papers or model papers.

34

www.tnschools.co.in Unit-1. ELECTROSTATICS To write 51

Total Questions: 15

Note: Normally problems more chance, from this chapter. (Text book examples or self evaluation). If problem is not given, chance from text book back Question. Compulsory problem is given in (June 07, June 11) (2 times) from this chapter. Refer Page No.42, 43 for book back questions. 1. Write the properties of electric lines of forces. Page No.7 (Mar 07 & 08, Oct -07,Mar 10,Oct 11, Mar 11)

2. Define electric potential at a point. Obtain an expression for electric potential due to a point charges. Page No.12,13 (Mar 09 ) 3. What is electrostatic potential energy of a system of two point charges? Deduce an expression for it. Page No.15,16 (Oct 09) 4. Prove that the energy stored in a parallel plate capacitors e is 5. 6. 7. 8. 9.

Page No.28 Explain working method of Van-de-Graaff generator. Page No.30,31 Deduce an expression for the capacitance of the parallel plate capacitor. Page No.26 (June 10) Derive an expression for the torque acting on the electric dipole when placed in uniform electric field. (Oct 10) Page No.11 Explain the effect of introducing a dielectric slab between the plates of parallel plate capacitor. Page No.26 Deduce an expression for the capacitance of the parallel plate capacitor. Page No. 23 to 24

10. What is a capacitor? Explain the principle of a capacitor. Page No. 22 & 23 11. State Gauss law. Using this drive an expression for electric field due to two parallel charges sheets. Page No.19 & 20 12. State Coulomb’s law in electro statics and explain it in vector form. Page No. 3 13. State and explain the principle of super position in electro statics. Page No.5 14. Problem from text book examples (Vol.1) Page No.32 to 40 1.4, 1.5, 1.6, 1.7 (C.P.in June 07), 1.9 (Model paper), 1.10 15. Problems from book-back problems, Page No. 43-45 1.41, 1.42, 1.44, 1.45,1.46, 1.47, 1.49 (June 08), 1.53 (Oct 08), 1.54 (C.P. in June 07), 1.55, 1.56, 1.58, 1.59 (C.P.in June 11) (June 06, Oct 06) Book back problems 1.13(Mar 06), 1.16(June 09)

Unit-2. CURRENT ELECTRICITY To write 52 and 53

Total Questions: 19

Note: Chance for one question and one problem. Compulsory problem is given in (Mar 07, June 10, Oct 10) - 3 Times, from this chapter. 1. 2. 3. 4.

Explain the working of a Leclanche cell with a diagram. Page No.66-67 (June 07) How will you compare the e.m.f .s of 2 cells using potentiometer? Page No.61, 62 (Mar 07, Oct 10 & Oct 11) Obtain the condition for bridge balance in wheat stone’s bridge Page No.57-58 (Mar 06 & 08, June 06 & 09, Oct 06, Mar 10) If two or more resistors are connected in parallel derive an expression for the effective resistance. Page No.53 (Oct 06)

35

www.tnschools.co.in 5. 6. 7. 8.

9. 10. 11. 12. 13. 14.

Write any five applications of super conductors. Page.No.51 (Oct 08, Mar 09, June 11) Explain how Metre Bridge is used to find the resistance of the wire. Page No.59 Define mobility. Establish a relation between drift velocity and current. Page No.47-48 (Mar 06) State and verify Faraday’s second law of electrolysis. How is it verified experimentally? Page No.63, 64 (June 06, Mar 08, Mar 11) State and explain Kirchhoff’s second law for electrical network. Page No.56 (June 07) Explain the principle of potentiometer. Page No.60, 61 (Oct 07) Explain the action of lead acid accumulator. Page No.68(Oct 07) Explain the determination of the internal resistance of a cell using voltmeter. Page No.54, 55 (June 08, Oct 09, June 11) State the Faraday’s first law of electrolysis and describe the experimental verification. Page No.63 (June 08, Oct 09) Explain the construction and working of Daniel cell. Page No.66 (Oct 08, June 09, June 10, Mar 11)

15. State Ohms law. Derive the relation between the current and potential difference. Page No.48-49 16. Define resistivity of a material. How are materials classified based on resistivity? Page No.49 17. Distinguish between electric power and electric energy. 18. Problems from text book examples. Page No.69-74 2.2 (Mar 09), 2.6, 2.7, 2.8, 2.9, 2.10 (C.P. in June 10), 2.11 (C.P in Oct 10), 2.12 (C.P. in Mar 07) 19. Problems from book-back. Page No.76-78. 2.30 (C.P. in June 10), 2.33 (Oct 11, Mar 10, C.P. in Mar 07), 2.34, 2.35, 2.36, 2.42, 2.44, (C.P. in Oct 10), 2.45, 2.46

Unit-3. EFFECTS OF ELECTRIC CURRENT To write 54

Total Questions: 12

Note: Compulsory problem (C.P) given from this chapter in Mar 09 and Oct 092 times from this chapter.

1.

What are the special features of magnetic Lorentz force? Page No.95-96

2.

Explain the conversion of a galvanometer in to an ammeter. Page No.106 (Mar 08)

3. 4. 5. 6. 7. 8. 9.

(June 07,Mar 11)

Explain in detail the principle and construction of a Tangent galvanometer. Page No.91(Diagram, theory not necessary)(Oct 08) State and explain Biot-Savart law. Page No.87,88 (June 09) Explain the phenomenon of Thomson effect. Page No.84,85

Applying Ampere circuital law, obtain an expression for a magnetic induction due to a long solenoid. Page No.92-94 Explain how a galvanometer is converted into a voltmeter. Page

No.108 (June 11,Mar 10)

Find an expression for the force between two long parallel current carrying conductors. Page No.101

Derive an expression for magnetic dipole moment of a revolving electron. Page No.110,111 10. Obtain an expression for torque experienced by a current loop in a uniform magnetic field. Page No.102-103 11. Problems: from text book examples Page No.112-117 3.3, 3.4(Oct 07), 3.5, 3.6, 3.11, 3.13 (June 10, C.P in Oct 09), 3.14, 3.15, 3.16 (Mar 07, C.P in Mar 09), 3.18 (June 08).

36

www.tnschools.co.in 12. Problems: from book back. Page No.120-121

3.30 (Mar 06, Oct 06, C.P in Mar 09), 3.31, 3.32, 3.34, 3.35(June 06, compulsory problem in Oct 09), 3.36(Oct 11), 3.37, 3.39 (Oct 10), 3.40.

Unit-4. ELECTROMAGNETIC INDUCTION AND A.C To write 55

Total Questions: 14.

Note: Normally Q.No 55 is from unit 4, chance for book-back questions. Page No.158-159. Till now, in all the previous board papers (Mar 06Oct 11), Compulsory problem is not given from this chapter. Problem was given only once in June 09 (Eg.4.5) 1.

2.

3. 4. 5.

6. 7.

Explain the various power loses in a transformer. How are they minimised. Page No.138-139 (June 06, Oct 06, Mar 11, Oct 10, June 10, Oct 09) Obtain the phase relation between current and voltage in an a.c circuit with an inductor only (graph not necessary) Page No.143 144 (Mar 06 & 08) What are eddy currents? Give their application. How are they minimised? Page No.136 Explain how an e.m.f can be induced by charging the area enclosed by the coil. Page No.132 (June 07, Oct 07 & 08, Mar 09) Explain the mutual induction between two long solenoids. Obtain an expression for the mutual inductance of a long solenoid. Page No.130 (June 08) Derive the expression for the self inductance of a long solenoid. Page No.126 & 127 Obtain an expression for the current flowing in a circuit containing resistance only to which alternating e.m.f is applied.

8. 9. 10. 11. 12. 13. 14.

Find the phase relationship between voltage and current. Page No. 142 & 143 (Oct 11) State Faraday’s laws and Lenz’s law of electro magnetic induction. Page No.124 (June 11) Describe the principle, construction and working of a choke coil. Page No.150 & 151 Give the application of eddy currents. Page No.134-137 (Mar 10 and Mar 07) Explain with an experiment, how Lenz law is in accordance with the law of conservation of energy. Page No.124 & 125 Obtain an expression for energy associated with an inductor. Page No.127 & 128 Problems from text book examples. Page No.151-155 4.3, 4.5(June 09) 4.7, 4.8, 4.9 4.10. Problems from book-back. Page No.159 & 160 4.54, 4.56, 4.57, 4.58, 4.59, 4.60, 4.61, 4.62, 4.63, 4.64

Unit-5. ELECTROMAGNETIC WAVES AND WAVE OPTICS To write 56

Total Questions: 22

Note: Chance for book back questions. Compulsory problem is given in (Oct 07& 08, Mar 10, Mar 11), 4 times from this chapter. 1. 2.

Write a note on piles of plates. Page No.198 (Mar 06, June 09) Explain polarization by reflection. Page No.197

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www.tnschools.co.in 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21.

State and prove Brewster law. Page No.197 (June 06, 07 & 08, Oct 06, Mar 09, June 10) Write a note on Nicol prism. Page No.199 (Mar 07, Oct 09, Oct 11) Explain the Phenomenon of total internal reflection by using wave theory. Page No.199 Explain Huygens’s principle. Page No.176 What are Fraunhofer lines? How is it useful to study the sun’s atmosphere? Page No.169, 170 State any five characteristic of electromagnetic waves. Page No.163-164 State and explain Raman Effect. Page No.173 Describe Rayleigh scattering in detail. Page No.173 Explain double refraction. Page No.198-199 Give the difference between interference and diffraction. Page No.194 (Oct 10) Bring out the differences between ordinary and extraordinary light. Page No.199 What are Newton’s rings? Why the centre of the Newton’s ring is dark? Page No.187 Explain the Hertz setup. Page No.164 Explain the phenomenon of polarization by reflection. Page No.197 Derive an expression to the radius of Newton’s nth dark ring and hence explain the applications of Newton’s rings. Page No.189 (June 11) Explain the types of emission spectra. Page No.168 Explain the phenomenon of optical activity. Page No.201 Describe the uses of Polaroid’s. Page No.200 & 201 Problems from text book examples. Page No.203-205 5-3(Model, Given as C.P. in Oct 07 & 08), 5.4 (C.P.in Mar 11), 5-7 (Mar 08, C.P. in Mar 10)

22. Problems from Book-back. Page No.209 5.40, 5.42 (C.P. in Oct 08), 5.43 (C.P.in Oct 07), 5.46, 5.47 (C.P. in Mar 10), 5.48 (C.P. in Mar 11)

VOLUME II – (5 Marks)

Unit-6. ATOMIC PHYSICS To write 57

Total Questions: 26

Note: Normally Q.no 57 will come from Atomic physics. Chance for a question or problem. Till now (Mar 06 to Oct 11). C.P. is not given from this chapter. 1. What is the characteristics x-ray spectrum? Explain its origin. Page No.32 (June 11) 2. Describe Lane experiment, what are the facts established by it. Page No.28 (Oct 06) 3. Short comings of Bohr’s Theory? Page No.21 4. Explain the spectral series of hydrogen atom without diagrams. Page No.16 (Mar 06, Mar 10, June 10) 5. State and obtain Bragg’s law for x-ray diffraction. Page No.29 (June 08, Oct 09, Oct 11)

6. 7. 8. 9. 10. 11.

Write any five properties of cathode rays. Page No.2 (Oct 08, June09) Write any five properties of x-rays? Page No.27 (Mar 11, June 06) Explain the production of x-rays in Coolidge tube. Page No.25 Explain the origin of continuous x-ray spectra. Page No.32 Explain the origin of characteristic x-rays. Page No.32 (Mar 09) State any five uses of Laser. Page No.40

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www.tnschools.co.in 12. Explain the production of canal rays. Page No.2 & 3 13. Explain the working of He-Ne Laser with the help of energy level diagram. Page No.38 14. Prove the energy of an electron for Hydrogen atom in nth orbit En= -me4/8eo2n2h2 (Oct 07) Page No.15 15. Explain how Bragg’s X-Ray spectrometer is used to determine the wavelength of X-Rays. Page No.30 16. Wavelength of Balmer Second line is 4861 A. Calculate the wavelength of the first line (Mar 07) 17. Derive an expression to the radius of nth orbit of an electron based on Bohr’s theory. Page No.13 & 14 18. Describe industrious applications and medical applications of Laser Light. Page No.39 19. Describe the scientific and engineering applications of X-Rays. Page No.34 20. Explain the properties of canal rays. Page No.3 21. Describe the defects of Rutherford’s atom model. Page No.12 22. Obtain an equation for the distance of closest approach of alpha particle in Rutherford experiment. Page No.10 &11 23. Problems from text book example, Page No.42 – 45 6.2, 6.4 (Mar 08), 6.5, 6.6, 6.7, 6.8 (June 07), 6.11 24. Problems from Book-back questions. Page No.49 & 50 6.45 (Oct10), 6.46, 6.47, 6.48.

Unit-7. DUAL NATURE OF RADIATION To write 58 and 59

Total Questions: 26

Note: Normally Q.no 58 and 59 will come from dual nature of radiation. One problem chance from this chapter. (Compulsory problem given in (June 2009), 1 time from this chapter)

1. 2. 3. 4.

Explain the construction and working of a photo emissive cell with diagram. Page No.57 (Oct 08) Describe Hallwachs experiment for they study of photo electric effect. Page No.51 (repeated) Discuss the effect of frequency of incident radiation on stopping potential. Draw graph. Page No.53 & 54 Explain the wave mechanical concept of an Atom. Page No.60 (Oct 07)

5. 6. 7.

Define work function state law of photo electric emission. Page No.55 (Mar 07) Explain Lorentz – Fitzgerald contraction, with examples. Page No.64 (Mar 06 & 08) Derive Einstein’s photoelectric equation. Page No.55 & 56 (Mar 06

June 06, Oct 09, June 10, Mar10)

8.

Explain time dilation with an example. Page No.65 (June 08, June 06)

9.

Write any five applications of photoelectric cell. Page No.57-58

(Oct 06, June 07, Mar 08, June 08 & 09)

10. Derive an expression for De Broglie wavelength of matter waves. Page No.58 (Oct 06, Mar 07 & 09, June 11, Oct 10, June 10) 11. Obtain Einstein’s Mass-energy equivalence. Page No.65 & 66 (June 07)

12. Explain the variation of photoelectric current with applied voltage. Page No.52-53 (repeated) 13. Explain Einstein’s theory of photoelectric effect. Page No.55 & 56 14. Explain length contraction on the basis of special theory of relativity. Page No.64 (Mar 10, Oct 10, Oct 11) 15. Explain the effect of potential difference on the photoelectric current. Page No.52

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www.tnschools.co.in 16. What is photo electric cell? Explain its working. Page No.57 17. Explain the construction working of electron microscope. Draw neat sketch. Page No.61 18. What is photoelectric effect? Explain With the help of a graph. Explain the effect of intensity if incident radiation on the photoelectric current. Page No.51 19. State the postulates of special Theory of relativity. Page No.64 20. Discuss the concept of space, time and mass. Page No.63 21. Explain the frame of reference. Page No.63 22. What is photoelectric effect? State the laws of photoelectric emission (Mar 09, Oct 11, Mar 11) 23. Derive an expression to the Debroglie’s wavelength associated with accelerated electrons. Page No.59 24. Describe photo emission cell. What are its applications? Page No.57-58 25. Problems: from text book examples: Page No.67-68 7.2 (Oct 09), 7.8 (Oct 08), 7.9(June 11, Oct 07) (7.3, 7.4, 7.5, 7.6) also given in model paper

26. Problems: from book back. Page No.74

7.33, 7.39, 7.40 (C.P. in June 09), 7.42 (Mar 11), 7.38 (C.P. in June 09), 7.31, 7.32, 7.35, 7.36, 7.37, 7.42.

Unit 8. NUCLEAR PHYSICS To write 60

Total Questions: 24

Note: Normally Q.No 60 is from Nuclear physics, nearly all examples and all book back problems were given as problems or compulsory problems in board papers or model papers. Compulsory problems were

given in (Oct 11, Mar 06, June 06, Oct 06, Mar 08, June 08), 6 times in board papers. 1. 2. 3. 4.

If the mass defect of the nucleus 6C-12 is 0.098 amu. Then calculate the binding energy per nucleon. (June 07) Write a note on the biological hazards of nuclear radiation. Page No.92 (Oct 08) Explain how a cosmic ray shower is formed. Page No.105(Mar 07) Explain the latitude effect of cosmic rays. Page No.105 (June 09,Oct 07)

5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16.

Explain the different characteristics of nuclear forces. Page No.82 Explain the variation of binding energy with mass number by a graph and discuss its features. Page No.79-80 Explain the construction and working of an atom bomb. Page No.98-99 Explain how liquid drop model of the nucleus can account for nuclear fission. Page No. 96 Explain how carbon nitrogen cycle can account for the production of stellar energy. Page No.104 Give an explanation for the binding energy curve (Graph not needed) (June 10) Page No.79 & 80 Write the properties of alpha –rays (Oct 10) Page No.89 Drive the expression N= Noe- t for radioactive disintegration. Page No.86 Explain the principle, Construction and working of a G.M. Counter. Page No.94 State any properties of neutrons. Page No.89 Describe the properties of beta rays. Page No.84 Write a note on elementary particles.

40

www.tnschools.co.in 17. Explain Soddy-Fajan’s radioactive displacement laws. (Mar 11) Page No.86 18. Explain chain reaction in nuclear fission. Page No.96 & 97 19. What are particle accelerators? Explain the two major types of accelerators. Page No.93 20. Describe application of radio isotopes. Page No.89 21. Describe the properties of nuclear force. Page No.82 22. Write the difference between and atom bomb and a nuclear reactor. Page No.97 & 98 23. Problems: from text book example, (Vol-2) Page no 109 to 115. 8-1 8-2 (Mar 09) 8-3, 8-5 (C.P.in Mar 08) 8-6. 8-4 8-7 & 8-10 (compulsory problem in Mar 06) 8-8 8-9 (compulsory problem in Oct-06 & C.P.in June-08)

8.10 (C.P. in Oct 11) 24. Problems: from solution book, page no 63.

8-47 (Oct 07) 8-49 (compulsory problem in June 06) 8-50 8.51 (Compulsory problem in Oct 11) 8-53 (Compulsory problem in Oct 06, C.P. Mar 08) 8-54 (Mar 10) 8-55 (June 11, Oct 09) C.P.in June 2008 & Oct 06 8-58 & 8.60 (Both combined as compulsory problem in few model papers) 8.61 8.59

Unit-9. SEMI CONDUCTOR DEVICES To write 61

Total Questions: 26.

Note: Normally Q.no 61 will come from Semi conductor devices. Question or problem has more chance. Only in June 10 problem was given from this chapter. Till now, compulsory problem was not given from this chapter. 1.

Explain bridge rectifier with neat circuit diagram. Page No.133 (June 06)

2. 3. 4. 5. 6. 7. 8. 9.

With a circuit diagram, explain voltage divider biasing of a transistor. Page No.145 (Mar 07, June 09) Draw the frequency response curve of single stage CE amplifier and discuss the result. Page No.146 (Mar 08) What is an AND gate? Explain the function of AND gate using electrical circuit and using diodes. Page No.157 (June 08) Explain the circuit symbol and pin out configuration of an operational amplifier. Page No.164 (Oct 08) Explain the forward biased characteristics of PN junction diode. Page No.129 State and prove De Morgan’s Theorems with truth table. Page No.161 (Mar 10, 06, Oct 06 & 09, Oct 11) Define current amplification factor  and β and obtain the relation between them. Page No.140 (June 07) Explain the function of a transistor as a switch. Page No.143 (Oct 07)

10. Explain the working of a half wave diode rectifier. Page No.132 (Mar 09, June 11)

11. Explain how operational amplifier is used as summing. Page No.167 12. Explain the principle of feed back amplifier. Page No.148

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www.tnschools.co.in 13. Explain the transistor circuit configurations. Page No.139 14. Explain half wave rectification. Page No.132 15. Sketch a neat diagram of a full wave rectifier using diodes. Explain its working. Page No.133 16. Describe the construction of Zener diode and mention, how it used as a voltage regulator? Page No.135 17. Compare intrinsic and extrinsic semiconductor. Page No.125 & 126 18. What is an EXOR gate? Give the Boolean expression for the EXOR operation. Page No.159 19. Describe the voltage divider bias of a NPN transistor. Page No.145 & 146 20. Explain how multimeter is used as Ohm-meter (multimeter diagram is not necessary) (Mar 11). Page No.170 & 171 21. Describe the valence band, conduction band and forbidden energy gap with the help of energy band diagram. Page No.124 22. Derive an expression for voltage gain of an amplifier with negative feed back. Page No.149 23. Explain the working of OR gate using discrete component. Page No.186 24. Describe the action of OP-AMP as difference amplifier. Page No.168 25. Problems from text book example, Page No.172 -175. 9-1,

9.2 (June 10), 9.6, 9.8, 9.9

26. Problems from Book back questions: Page No.179 9.53, 9.55, 9.56, 9.58 and 9.59.

Unit-10. COMMUNICATION SYSTEMS To write 62

Total Questions: 28

Note: Normally Q.no 62 will come from Communication systems. Till now compulsory problem was not given from this chapter (Only in Mar 11). Problem was given. 1.

Wh a t

are

the

advantages

a nd

disadvantages

of

digital

communication? Page No.209 (Mar 06, June 06, 08 & 09) 2.

Explain space wave propagation of radio waves. Page No.183(Oct 06)

3.

Explain the working of a straight radio receiver. Page No.194

4.

Explain the function of a FM super heterodyne receiver with a diagram. Page No.196(Oct 08, Mar 09)

5.

Explain analog and digital communication. Page No.208

6.

Write a note on wire and cable used for Telecommunication system. Page No.210,211

7.

What is an optical fibre? Mention the advantages of fibre optical communication system. Page No.211 (Oct 11, Mar 08)

8.

Write a note on satellite communications. Give its merits and dements. Page No.212-214

9.

Mention the principle of RADAR and write its applications. Page No.206 (Mar 07,Mar 10)

10. Draw the block diagram of AM radio transmitter and explain its function. Page No.192 (Oct 07,Oct 10)

42

www.tnschools.co.in 11. Explain the function of FM transmitter, with a neat diagram. Page

26. Explain the reflection of electro magnetic waves by ionosphere. Page No.183

No.193 (Oct 08, Oct 09, June 10, June 11)

12. Explain the merits and demerits of frequency modulation. Page No.190-191 13. Explain super heterodyne receiver (AM) with block diagram. Page

27. Problem from textbook examples. Page No.214,215 10.1 (Mar 11), 10.2 28 .

No.194-195

Problems from book back questions. Page No.217 (10.33)

14. Explain the working of simple radio receiver with a block diagram. What are its advantages? Page No.194 15. Explain frequency modulation transmitter with block diagram.

10 - MARK – Blue PRINT

Page No.193 16. How is flicker effect removed during interlaced scanning? Page No.200 17. Explain the function of various units in the monochrome television transmission. Page No.203

Sl. No

UNITS

No. of Qus. 8

Q . No

1

ELECTROSTATICS

1

63

2

EFFECTS OF ELECTRICITY CURRENT

1

64

3

ELECTRO MAGNETIC INDUCTION AND A/C

1

65

4

ELECTRO MAGNETIC WAVES AND WAVE OPTICS

1

66

advantages. Page No.211,212 (June 07)

5

ATOMIC PHYSICS

1

67

23. Explain the principle of modem. Page No.209

6

NUCLEAR PHYSICS

1

68

7

SEMI CONDUCTOR DEVICES

1

69

18. Explain the ground wave propagation. Page No.183 19. Explain amplitude modulation. Page No.186 20. Explain the operation of Facsimile. Page No.210 21. Explain the variation of motion of radio waves at different angles of incidence. Page No.184-185 22. Write a note on fibre optical communication and mention its

24. Explain the significance of modulation factor 25. Explain the limitations of amplitude modulation. Page No.189

43

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COMMUNICATION SYSTEMS

1

70

Note: Normally no ten marks question from Dual nature and Current electricity.

10 MARKS VOLUME: I UNIT 1: ELECTROSTATICS

8. 9.

an infinitely plane sheet of charge of q. Page No.17-19. (June 11) What is dielectric? Explain the effect of introducing a dielectric slab between the plates of a parallel plate capacitor. Page No.2426

Define the electric potential at a point. Is it a scalar or vector quantity? Obtain an expression for electric potential due to a point charge. Page No.12-13

10. State Gauss law using this find an expression for electric field due to

uniformly charged spherical shell at a point (i)outside the shell (ii) on the surface (iii)inside the shell.

To write 63

NO 10MARKS FROM UNIT:2

NOTE: Chance from book question. Refer text book page no: 42, 43 (vol1) 1. 2. 3. 4. 5. 6. 7.

What is an electric dipole? Derive an expression for the electric field due to an electric dipole at a point on its axial line. Page No. 8-9 (Mar 06 & 09, June 06, June 10, Oct 10)

Derive an expression for electric potential due at a point to an electric dipole discus the special cases. Page No.14-15 (Oct 06, Mar & June 08, Oct 11, Mar 10 )

Deduce an expression for equivalent capacitance of capacitors connected Page No.27-28 (i) parallel (ii) series. (June 07, Oct 07)

Principle, construction and working of Van de Graaff generator. What is its use. Page No. 30-31(Oct 08 & 09) Derive an expression for electric field due to an electric dipole at a point along the equatorial line. Page No.9-10 (Mar 07, June 09) Explain the principle of a capacitor. Deduce an expression for the capacitance of a parallel plate capacitor. What is capacitor? Page No.22-26

State Gauss’s law. Applying this calculate electric field due to (i) an infinitely long straight charged with uniform charge density (ii)

UNIT:3. Effects of Electric current To write 64 Note: Normally two five marks combined as 10 marks chance from this chapter. 1. 2. 3.

4.

Discuss the motion of a charged particle in a uniform magnetic field. Define magnetic Lorentz force.(June 10) Page No.95-97 Explain the principle, construction and working and limitations of a cyclotron. With diagram. Page No.97-99(Mar 07, Oct 10&11) Obtain an expression for the torque experienced by a current loop in a uniform Magnetic field. Page No.102-103 Obtain expression for a magnetic induction due at a point to infinitely long straight conductor carrying current. Write expression for the magnetic induction when the conductor is place in a medium of permeability. Page No.88-89 (June 06, Oct 09,

44

www.tnschools.co.in Mar 10)

5.

6.

7. 8.

Apply Biot – Savart law, obtain an expression for the magnetic induction at a point due to infinitely long straight conductor carrying current. Page No.87-89 (Mar 06, Oct 09) Define ampere’s circuit law. Applying it find the magnetic induction at a point due to a long solenoid carrying current. Page No.92-95

(Oct 06, June 09)

State Joule’s law. Explain Joule’s calorimeter experiment to verity Joule’s law of heating. Page No.79-81 (June 07) Deduce the relation for the magnetic induction, at a point along the axis of a current coil carrying current. Page No.89-90 (Oct 07,

Note: Normally Questions will be twisted type. So prepare well. Chance for book-back. Refer Page No.158-159 1.

2.

Explain in detail the principle, construction and theory of a tangent galvanometer. Page No.91-92 (June 08) 10. Deduce expression for the force on a current carrying conductor placed in a magnetic field. (Oct 08) Find the magnitude of the force. (Mar 09, June11) Page No.99-100 11. Explain the principle, construction, theory of moving coil galvanometer. Page No.103-105 12. Deduce an expression for the magnetic dipole of moment of a revolving electron. Page No.110-111 13. Obtain an expression for the force between two long parallel current carrying conductors. Hence define ámpere’. Page no.101,102 (Mar 11)

Unit 4. Electro Magnetic Induction and A/C To write 65

Page No.137-138

(Mar 06)

Describe principle, construction, and working of a single phase A.C generator. Page No.133-134 (Mar 07 & 08, June 07, Oct

07&10,June 11,Mar 11 )

3.

Discuss with theory the method of inducing e.m.f in a coil by changing its orientation with respect to the direction of the magnetic field. Page No. 132-133(June 08&10, Oct 09&11, Mar 11)

4.

Obtain the phase relation between voltage and current in an A.C circuit containing a pure inductance. Draw the necessary graph.

Mar 08)

9.

Principle, construction, theory of a transformer. Define its efficiency mention the energy losses and working of transformer.

5. 6. 7. 8.

Page No.143-144

(Oct 08)

What are eddy current? Explain their applications. How are they minimized? Page No.136-137 (Mar 09) Describe principle, construction, and working of a choke coil. Page No.150-151

Explain A.C circuit containing resistor, inductor and capacitor in series. Page No.146-147

In an ac circuit containing a capacitor, the instantaneous emf is e=Eosinωt. Obtain the expression for instantaneous current. Explain the phase relation between emf and current by graph. (Oct 06) Page No.144 9. State Lenz’s law and illustrate through an experiment. Explain how is it in accordance with the law of conservation of energy? Page No.124-125 10. Explain the mutual induction between two long solenoids. Obtain an expression for the mutual inductance. Page No.128-129 11. Obtain an expression for the current flowing in a circuit containing

45

www.tnschools.co.in resistance only to which alternating emf is applied. Find the phase relationship between voltage and current. Page No.142-143 12. Obtain an expression for the current flowing in a circuit containing resistance only to which alternating emf is applied. Find the phase relationship between current and voltage. Page No.144-145 13. Describe the principle, construction and working of three phase a.c generator. Page No.135-136

14. A source of alternating emf is connected to a series combination of a resistor R, L, C. Refer the page 159 (4.53) Page No.146-147 (June 06, 09)

15. Explain long distance power transmission. Page no. 139-140.

UNIT.5. Electro Magnetic wave and wave optics To write 66 Note: Normally question from book back chance. Two 5 marks questions combine as 10 mark (chance) 1. 2. 3. 4. 5.

6.

Explain Raman scattering of light with the help of energy level diagram. Page No.173-175 (Mar 07, Oct 07, June 11) Discuss an experiment to demonstrate the transverse nature of light. Page No.194-195 Explain Polarisation by reflection. Derive Brewster’s law and describe the working of pile of plates. Page No.197-198 Write a note on (i) Nicol Prism (ii) Polaroid. Page No.199-200 On the basis of wave theory, explain total internal reflection. Write the conditions for the total internal reflection to take place. Page No. 179-180 (Mar 06, June 06)

What is known as interference? Derive an expression for band with of interference fringes in Young’s double slit experiment.

7.

Page No.181-183 (Oct 06&11&10, June 07&10, Mar 09&11) Explain emission and absorption spectra.PageNo.168-169(June 09, Mar 10)

8.

State Huygens’s principle on the basis of wave theory. Prove the laws of reflection. Page No.176-177 (Oct 08) 9. Explain theory of interference in thin transparent film due to reflected light and obtain the condition for the intensity to be maximum and minimum. Page No.181 (June 08, Oct 09) 10. What are called Newton’s rings? Explain the experiment and theory of forming the Newton’s ring. Page No.182 11. Discuss the theory of plane transmission grating. Page No.191192

12. Explain the refraction of a plane wave front at a plane surface and state laws of refraction. Page No.178-179 13. Explain reflection and refraction on the basis of wave theory of light. Page No.177-178 14. Using huygen’s principle, verify the laws of refraction. Page no.178 and 179 15. Derive an expression for the radius of the nth dark ring in Newton’s ring experiment. Using it determine the (i) wavelength of light (ii)refractive index of liquid. Page no. 189,190.

Volume II(10 marks) Unit.6: Atomic Physics To write 67 Note: Normally Questions will be twisted type. So prepare well. 1.

State Bohr’s postulates. Obtain an expression for the radius of nth

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www.tnschools.co.in based on Bohr’s Theory. Page no. 15,16

orbit of hydrogen atom based on the Bohr’s Theory. Page No.122.

13(Mar06&11, June 09)

11 )

3.

Draw a neat sketch of ruby laser. Explain its working with the help of energy level diagram. Page No.36-37(Oct 06 & 07, Mar 09, June 11)

4.

5.

How will you determine the wavelength of x-rays using Bragg’s spectrometer. Write any five properties of x-rays. Page No.2730(Mar 07)

7.

9.

To write 68 Note: Normally book back question Chance. Refer Page No.118-119 1. 2.

3.

Explain the method of calculating ratio of semi major and semi minor axes of elliptical orbit of Sommer field atom model. Page

5.

No.21-24

Describe the principle and action of a Bainbridge Mass spectrometer in determining the isotopic masses. Page No.80-81 (June 06, 07 & 08, Oct 06, Mar 09, June 11, Oct 10, June 10)

4.

6.

Explain the production of X-rays using Coolidge tube. Page No.2526

10. Give an account for principle of laser, laser action and characteristic laser. Page No.34-35 11. Describe Millikan’s oil drop experiment to determine the charge of an electron. Page No.5-7 (June 08, Oct 08) 12. Obtain the expression for the total energy of an electron in the nth orbit

Explain the stellar energy with proton-proton cycle and carbonnitrogen cycle? Page No.104 What is the nuclear reactor? Explain the function of (i) moderator (ii) control rods (iii) neutron reflector. Mention the uses of nuclear reactor. (diagram not necessary) Page No.98-101 (Mar 06)

Obtain the expression for the radius of nth orbit of an electron based on Bohr’s theory. Page No.13-14 (Mar 08) Describe the J.J Thomson method for determine the specific charge of an electron. Page No.3-4 (Oct 09, 10, Mar 10, June 10, Oct 11)

8.

Unit.8: Nuclear Physics

Derive Bragg’s law. Explain how a Bragg’s spectrometer can be used to determine the wavelength of x-rays. Page No.29-30 (June 07)

6.

No 10 marks question from unit:7

Draw a neat diagram of the He-Ne laser and explain its working with the help of energy level diagram. Page No.38-39(June 06,Mar

7. 8.

Explain the construction and working of a GM counter. Page

No.94(Mar 07, Oct 07, June 09, Mar 11)

What are cosmic rays? Explain the latitude effect and Altitude effect, regarding cosmic rays. Page No.105-106 (Mar 08) Obtain an expression for the amount of the radioactive substance present at any moment. Obtain the relation between half life period and decay constant. Derive the relation N=Noe-λt. (Oct-08). Write the radioactive law of disintegration. (Oct 09&11) Page No.8588

Compare the properties of alpha, beta and gamma rays. Page No.84.

Describe the cosmic rays showers. Explain quark model of elementary particles. Page No.106-108

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www.tnschools.co.in 9.

What are the nuclear forces? Give important properties of nuclear forces. Page No.82 10. Explain mass defect. Draw the graph of binding energy. What are the inferences from the graph? Page No.79-80 11. Describe the properties of cosmic rays. Page No.105 12. Explain the applications of radio isotopes in various fields. Page no.

90,91. 13. Define binding energy. Explain the reaction of binding energy with mass number. Page no.79,80. 14. Describe the discovery of neutrons and state the properties of neutron. Page no.88,89

Unit.9: Semi conductor Devices To write 69 Note: Normally book back question chance. Refer Page No.117-178. 1.

2.

3. 4. 5.

With the circuit diagram, explain the working of a Bridge rectifier. Draw its input and output signals. What are the advantages. Page No.133-134 (June 07,June 10, Oct 11)

Explain with neat circuit diagram, the working of single stage CE amplifier. Draw the frequency response curve and discuss the result. Page No.146-147 (June 08, Mar 11) Sketch the circuit of a Colpitts oscillator and explain its working. Page No.153 (June 06, Oct 06, Mar 08, June 09&11)

With a circuit diagram, explain the working of an operational amplifier as a summing amplifier. Page No.167 (Mar 07) Explain the action of an operational amplifier as difference amplifier. Page No.168(Oct 07)

6.

What meant by feed back? Derive an expression for voltage gain of an amplifier with negative feedback. Page No.148,149 (Mar 09)

What is operational amplifier? Explain its action as (i) inverting amplifier (ii) non inverting amplifier. (Oct 09) Page No.164-167 8. Describe the energy band structure of insulator, semi conductor and conductor. Page No.123-124 9. Describe the construction of cathode ray oscilloscope (CRO) working; describe various compounds with neat diagram and how it used to determine frequency and voltage. Page No.169-170 10. What is called amplifier? With a circuit explain the working of transistor as amplifier. Page No.143-144 11. With the help of neat circuit diagram, explain the output characteristic of an NPN transistor in CE mode and methods of finding the parameters of the transistor. Page No.140-142 (Oct 10) 12. Describe the working of a transistor amplifier with graph. Page 7.

No.143-144

13. Draw the logic diagram and write the truth table for the following logic gates. (i) OR gate (ii) AND gate (iii) NOR gate (iv) EXOR gate (v) NAND gate. Page No.156-160 14. What is an IC? Explain the classification of IC by its construction. Page No.154

15. Describe the construction and working of a multimeter with a neat

diagram. Explain how is it used as a voltmeter and ohm-meter. Page No.170-171 16. What is rectification? Explain the working of bridge rectifier with diagram. Draw input and output signals with necessary wave forms. Page no.132-134(Mar06&10). 17. With the circuit diagram explain the function of a CE transistor

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www.tnschools.co.in amplifier. Page no. 143,144. (Oct 08) 18. Explain the characteristic and working of PN junction diode in forward and reverse bias. Page no.128-130. 19. Describe the working of PNP transistor. Page no.138,139. 20. Explain an experiment to determine the characteristic of a transistor in CE configuration. Explain how the transistor parameter can be evaluated. Page no.139,140.

Unit.10: COMMUNICATION SYSTEM To write 70 Note: Normally Book back question chance Book-back may also be asked in a twisted manner. 1.

Make the analysis of amplitude modulated wave. Plot the frequency spectrum and band width. Page No. 187-188(June & Oct 06, Mar 08 & 09, Oct 10, June 10)

2.

3. 4. 5. 6.

With the help of a functional block diagram. Explain the operation of a super heterodyne AM receiver. Page No.194-

8. 9. 10. 11. 12.

Explain the construction and working of a vidicon camera tube with neat diagram. Page No.197-198 (June 07&09) With the help of block diagram, explain the function of radar system.Page No.206(Oct 07) Describe simple scanning and synchronizing in television. Page no. 198-199. What are different types of wire and cable used for telecommunication system? Page No.209-211 With the help of block diagram, explain the function of AM transmitter. Page No.192-193 Explain frequency modulation. Page No.189-190

13. 14. Write about radar. (Principle, Working and applications. Page No.206208(Oct 11)……

ALL THE BEST

195(June 07, Mar 11)

Explain the construction and working of Monochromic picture tube Page No.201-203 Write a note on fiber optic communication. Mention its advantages. Page No.211-212 Write a note on satellite communication. Give its merits and demerits. Page No.212-214 With the help of a functional block diagram, explain the function of a monochrome TV receiver. Page No.204-205 (Mar 06,Mar 07, June 11, Mar 10)

7.

(June 08, Oct 08 & 09)

With the help of block diagram, explain the function of various units in the monochrome television transmitter. Page No.203-204

JAI GURU DEV

Chemistry ONE MARK