12th Physics Important 2 Marks and 3 Marks Questions.

12th Physics Important 2 Marks and 3 Marks Questions.

+2 Physics Question Bank
2 Marks & 3 Marks (Unit Wise)

UNIT 1 – Electrostatics

1. State quantization of electric charge.
2. State Coulomb's law in electrostatics.
3. Define one coulomb.
4. Distinguish between Coulomb force and gravitational force.
5. Two electric field lines never intersect each other. Why?
6. Define electric dipole moment. Give its unit.
7. Define electrostatic potential. Give its unit.
8. Define electric flux.
9. State Gauss law.
10. What are called polar molecules? Give examples.
11. Define dielectric polarization.
12. Why is it safer to sit inside bus during lightning?
13. Define capacitance of a capacitor.
14. Define electrostatic induction.
15. Write applications of capacitor.
16. Define corona discharge.

UNIT 2 – Current Electricity

1. Define electric current.
2. Define resistivity of a material.
3. Distinguish drift velocity and mobility.
4. Define temperature coefficient of resistivity.
5. Distinguish electric energy and electric power.
6. Why repairing electrical connection with wet skin is dangerous?
7. Define internal resistance of a cell.
8. State Kirchhoff's first law.
9. State Kirchhoff's second law.
10. State Joule's law of heating.
11. Properties of heating element substance.
12. Define Seebeck effect.
13. Define Peltier effect.
14. Define Thomson effect.

UNIT 3 – Magnetism

1. Define magnetic inclination.
2. Define magnetic dipole moment.
3. Define magnetic flux. Give unit.
4. State Coulomb’s inverse square law of magnetism.
5. Define intensity of magnetization.
6. Define magnetic susceptibility.
7. What is hysteresis?
8. Define Curie’s law.
9. State Maxwell's right hand cork screw rule.
10. State right hand thumb rule.
11. Define Bohr magneton.
12. State Ampere's circuital law.
13. State Fleming's left hand rule.
14. Define current sensitivity of galvanometer.
15. How to increase current sensitivity?

UNIT 4 – Electromagnetic Induction

1. Define electromagnetic induction.
2. State Faraday's laws.
3. State Lenz's law.
4. State Fleming's right hand rule.
5. Define self inductance.
6. Define mutual inductance.
7. Define one henry.
8. What are eddy currents?
9. Methods of producing induced emf.
10. Distinguish step up and step down transformer.
11. Define RMS value of AC.
12. Why capacitor blocks DC but allows AC?
13. Define Q-factor.
14. Define wattless current.

UNIT 6 – Ray Optics

1. State laws of reflection.
2. Define focus.
3. Define focal length.
4. Define refractive index.
5. Define optical path.
6. State Snell's law.
7. Define total internal reflection.
8. Define critical angle.
9. Conditions for total internal reflection.
10. Define power of lens.
11. Reason for glittering of diamond.
12. State Rayleigh scattering law.
13. Why sky appears blue?
14. Why sunset appears reddish?
15. Why clouds appear white?

+2 Physics Question Bank
2 Marks & 3 Marks (Unit Wise)

UNIT 7 – Wave Optics

1. What is dual nature of light?
2. Define wave front. Give its types.
3. State Huygen's principle.
4. Define interference.
5. What are coherent sources?
6. Conditions for clear interference bands.
7. What is diffraction?
8. Define grating element.
9. What is Rayleigh's criterion?
10. Define polarization.
11. Define angle of polarization.
12. Define double refraction.
13. Define optic axis.
14. Define uniaxial and biaxial crystal.
15. What is astigmatism?

UNIT 8 – Photoelectric Effect

1. Define surface barrier.
2. Define work function of metal.
3. Define electron volt (eV).
4. What is photoelectric effect?
5. Define stopping potential.
6. Define threshold frequency.
7. What is Bremsstrahlung?

UNIT 9 – Nuclear Physics

1. What are cathode rays?
2. Define impact parameter.
3. Define ionization energy.
4. What is isotope? Give example.
5. Define atomic mass unit.
6. What is mass defect?
7. Energy equivalent of one atomic mass unit.
8. Define radioactivity.
9. State properties of neutrino.
10. Define activity. Give its unit.
11. Define half life of nucleus.
12. Define mean life of nucleus.
13. What is nuclear fission?
14. What is nuclear fusion?
15. What is radio carbon dating?

UNIT 10 – Semiconductor Electronics

1. What is intrinsic semiconductor?
2. Define doping.
3. What is extrinsic semiconductor?
4. Distinguish P-type and N-type semiconductor.
5. Differentiate forward bias and reverse bias.
6. What is Zener diode?
7. Applications of LED.
8. Define forward current gain.
9. Barkhausen conditions for oscillations.
10. Applications of integrated circuits.
11. What is modulation?
12. Define bandwidth.
13. Modes of propagation of radio waves.
14. Define skip distance.
15. Define fibre optical communication.

Akwa Academy | +2 Physics Important Questions

Akwa Academy | +2 Physics Important Questions