1. What is the SI unit of electric charge?

2. Charge of one electron is:

3. Which law governs the force between two point charges?

4. Coulomb’s law is valid only for:

5. Electric field is a:

6. SI unit of electric field is:

7. Lines of electric field never:

8. Electric field inside a conductor is:

9. The force between two charges is inversely proportional to:

10. SI unit of permittivity is:

11. Value of ε₀ (permittivity of free space) is:

12. Superposition principle applies to:

13. What is quantization of charge?

14. Electric dipole moment depends on:

15. The value of Coulomb's constant k is:

1. Electrostatic potential at a point is defined as:

2. The SI unit of electric potential is:

3. The electrostatic potential due to a point charge decreases with:

4. The work done in moving a charge in an equipotential surface is:

5. Potential difference between two points is the work done in:

6. Unit of capacitance is:

7. Capacitance of a parallel plate capacitor depends on:

8. Capacitance increases with:

9. What happens to the capacitance when the dielectric constant increases?

10. Energy stored in a capacitor is:

11. The dimension of capacitance is:

12. Two capacitors 2 µF and 3 µF are connected in series, equivalent capacitance is:

13. The electric field inside a conductor is:

14. A capacitor stores energy in the form of:

15. Capacitance of a parallel plate capacitor is directly proportional to:

1. SI unit of electric current is:

2. Electric current is defined as:

3. Ohm's law is valid when:

4. SI unit of resistance is:

5. A conductor obeys Ohm’s law when:

6. The resistivity of a conductor depends on:

7. Drift velocity is proportional to:

8. Current density is defined as:

9. Relation between current (I), charge (Q) and time (t) is:

10. Resistance of a wire increases with:

11. A good conductor has:

12. In a series circuit, the current is:

13. SI unit of power is:

14. Power dissipated in a resistor is:

15. A battery is a source of:

1. Magnetic field due to a current-carrying wire is given by:

2. SI unit of magnetic field is:

3. Magnetic field inside a long straight current-carrying solenoid is:

4. Direction of magnetic force is given by:

5. Magnetic force on a moving charge is:

6. Force on a current-carrying conductor in magnetic field is:

7. Magnetic field at the center of a circular loop is proportional to:

8. In Ampere's circuital law, ∮B·dl equals:

9. A charged particle moves in a magnetic field in a circular path due to:

10. Cyclotron is used to:

11. Lorentz force includes:

12. Magnetic field due to infinite straight wire is:

13. Radius of circular path of charge in magnetic field increases with:

14. Work done by magnetic field on moving charge is:

15. Unit of magnetic permeability μ₀ is:

1. The earth’s magnetic field is due to:
   a) Presence of magnetic materials in the core
   b) Motion of molten iron in the core
   c) Gravitational pull of the moon
   d) Rotation of the earth


2. Which of the following is a unit of magnetic dipole moment?
   a) A·m
   b) A/m
   c) A·m²
   d) T·m


3. The angle of dip is 90° at:
   a) Equator
   b) Magnetic equator
   c) Poles
   d) Tropic of Cancer


4. Which material is not attracted by a magnet?
   a) Iron
   b) Cobalt
   c) Nickel
   d) Copper


5. A magnetic needle in a non-uniform field experiences:
   a) Only torque
   b) Only force
   c) Both force and torque
   d) Neither force nor torque


6. A bar magnet is cut into two equal pieces. Magnetic moment of each is:
   a) Same
   b) Half
   c) Double
   d) Zero


7. Magnetic susceptibility of diamagnetic material is:
   a) Positive and large
   b) Positive and small
   c) Zero
   d) Negative


8. Field at center of current loop is:
   a) Zero
   b) Along loop axis
   c) Perpendicular
   d) Tangential


9. Which has highest magnetic permeability?
   a) Vacuum
   b) Air
   c) Soft iron
   d) Copper


10. A suspended magnet aligns in which direction?
    a) North-South
    b) East-West
    c) Vertically upward
    d) Any direction


11. Which instrument measures angle of dip?
    a) Tangent galvanometer
    b) Magnetometer
    c) Dip circle
    d) Flux meter


12. Permanent magnets are made from:
    a) Soft iron
    b) Steel
    c) Copper
    d) Aluminum


13. A neutral point is where:
    a) Field is max
    b) Field is zero
    c) Lines are parallel
    d) Flux is max


14. Earth’s magnetic field lines emerge from:
    a) Geographical North
    b) Magnetic North
    c) Magnetic South
    d) Geographical South


15. In a bar magnet, lines go from:
    a) South to North
    b) North to South
    c) Circular
    d) Random

1. Who discovered electromagnetic induction?

2. The SI unit of magnetic flux is:

3. Electromagnetic induction occurs when:

4. The direction of induced current is given by:

5. Lenz’s Law obeys which conservation principle?

6. If Φ = 2t² + 3t, the induced EMF at t = 2s is:

7. In motional EMF, the formula is:

8. A 500-turn coil experiences a 0.02 Wb flux change in 0.1 s. EMF is:

9. Which device works on electromagnetic induction?

10. Magnetic field and induced current are:

11. What happens when a bar magnet is pushed into a coil?

12. Mutual induction depends on:

13. The direction of motional EMF is determined by:

14. Self-induction is the property of a coil to:

15. A conductor moves parallel to a magnetic field. Induced EMF is:

1. Electromagnetic waves are:

2. The speed of electromagnetic waves in vacuum is:

3. Which one of the following has the highest frequency?

4. Which EM wave is used in radar systems?

5. Which of the following is not a source of EM waves?

6. EM waves carry:

7. In EM waves, electric and magnetic fields are:

8. Maxwell's equations predict the existence of:

9. Which electromagnetic wave is used for night vision devices?

10. The energy in EM waves is equally shared between:

11. Which electromagnetic wave is used for sterilization?

12. The magnetic field in an EM wave is perpendicular to:

13. The wavelength of visible light is in the range of:

14. The electromagnetic waves do not require:

15. Which electromagnetic wave has the lowest energy?

1. Light travels in:

2. The speed of light is maximum in:

3. Laws of reflection are valid for:

4. Mirror formula is:

5. Focal length of plane mirror is:

6. The unit of power of a lens is:

7. A convex lens forms a virtual image when:

8. Total internal reflection occurs when:

9. Critical angle increases when:

10. Optical fiber works on the principle of:

11. Which device is used to view distant objects?

12. The power of a lens is positive for:

13. The magnification produced by a mirror is negative when:

14. The resolving power of a microscope increases with:

15. Which lens is used in a simple magnifier?

1. Wavefront is a surface of:

2. The principle of superposition is used to explain:

3. Which of the following proves the wave nature of light?

4. Who gave the principle of wavefront?

5. Young's double slit experiment demonstrates:

6. The fringe width in YDSE is proportional to:

7. In constructive interference, the phase difference is:

8. The unit of fringe width is:

9. In diffraction, the central maxima is:

10. Which of the following cannot be polarized?

11. Brewster’s law relates polarization angle with:

12. Which phenomenon proves the transverse nature of light?

13. If distance between slits in YDSE increases, fringe width:

14. The light used in YDSE should be:

15. Coherent sources have:

1. A wavefront is defined as a surface of constant:

2. Who proposed the wave theory of light using wavefronts?

3. In Young’s double slit experiment, the interference fringes are:

4. The central fringe in Young’s double slit experiment is:

5. The fringe width (β) is directly proportional to:

6. Fringe width in YDSE is given by:

7. Diffraction is most prominently observed when the obstacle is:

8. In single-slit diffraction, the central maxima is:

9. Which phenomenon proves the transverse nature of light?

10. Which wave property is used in diffraction?

11. In constructive interference, the path difference is:

12. The angular position of the nth bright fringe in YDSE is:

13. Which of the following light waves can be polarized?

14. Brewster’s angle is the angle of incidence at which:

15. The optical device that uses interference of light is:

1. A wavefront is defined as a surface of constant:

2. Who proposed the wave theory of light using wavefronts?

3. In Young’s double slit experiment, the interference fringes are:

4. The central fringe in Young’s double slit experiment is:

5. The fringe width (β) is directly proportional to:

6. Fringe width in YDSE is given by:

7. Diffraction is most prominently observed when the obstacle is:

8. In single-slit diffraction, the central maxima is:

9. Which phenomenon proves the transverse nature of light?

10. Which wave property is used in diffraction?

11. In constructive interference, the path difference is:

12. The angular position of the nth bright fringe in YDSE is:

13. Which of the following light waves can be polarized?

14. Brewster’s angle is the angle of incidence at which:

15. The optical device that uses interference of light is:

1. Who discovered the photoelectric effect?

2. Which quantity of light affects the number of photoelectrons emitted?

3. Which theory explains the photoelectric effect?

4. The energy of a photon is given by:

5. Work function is the:

6. If frequency of incident light is less than threshold frequency:

7. Which particle shows both particle and wave nature?

8. De Broglie wavelength is given by:

9. The momentum of a photon is:

10. What does the photoelectric current depend on?

11. In photoelectric effect, maximum kinetic energy is given by:

12. Which experiment supports wave nature of electrons?

13. Which factor does not affect de Broglie wavelength?

14. Threshold frequency is:

15. Wave-particle duality is explained by:

1. Which model explains the quantized nature of atomic energy levels?

2. What is the main drawback of Rutherford’s model?

3. Bohr's model is based on which principle?

4. What is the radius of the first Bohr orbit for hydrogen?

5. Which quantity is quantized in Bohr’s model?

6. The energy of the nth orbit in hydrogen atom is proportional to:

7. In hydrogen atom, the energy difference between n=2 and n=1 gives:

8. The angular momentum of electron in Bohr orbit is:

9. The line spectrum of hydrogen is explained by:

10. Which orbit corresponds to the Balmer series?

11. The energy of an electron in nth orbit is:

12. What causes emission of radiation in atoms?

13. Lyman series lies in which part of spectrum?

14. The frequency of radiation emitted is given by:

15. The maximum number of electrons in an orbit is:

1. Which of the following is a property of the nucleus?

2. What is the approximate radius of a nucleus?

3. The binding energy per nucleon is maximum for:

4. What is the unit of nuclear radius constant ‘r₀’?

5. Which force is responsible for holding nucleons together?

6. Mass defect is:

7. Binding energy is related to:

8. In nuclear fission:

9. Nuclear fusion takes place in:

10. Which of the following is conserved in nuclear reactions?

11. The energy released in a nuclear reaction is due to:

12. The process of combining lighter nuclei is called:

13. What is the mass number of a nucleus?

14. Alpha particle is:

15. The equation E = mc² relates:

1. Which of the following is a semiconductor?

2. The energy band gap in a semiconductor is:

3. In an intrinsic semiconductor, the number of electrons is:

4. Doping increases:

5. An n-type semiconductor is formed by doping with:

6. Majority carriers in p-type semiconductors are:

7. In a p-n junction diode under forward bias, the resistance is:

8. Which device converts AC to DC?

9. A Zener diode is used as:

10. In a transistor, current flows from:

11. Transistors are used as:

12. The region between p and n sides in a p-n junction is called:

13. A transistor has:

14. Which material is commonly used in IC fabrication?

15. In logic gates, the basic building blocks are: