Board Central Board of Secondary Education [CBSE] Class 12th / XII Download Sample Question Paper 2023-24 Subject Physics Document Type PDF Official Website http://cbseacademic.nic.in/

## CBSE Class XII Physics Sample Question Paper

Download Central Board of Secondary Education [CBSE] Class 12th Physics Sample Question Paper 2023-24 PDF Free Online

## CBSE Class XII Physics Sample Questions

1. Which of the following is not the property of an equipotential surface?
(a) They do not cross each other.
(b) The work done in carrying a charge from one point to another on an equipotential surface is zero.
(c ) For a uniform electric field, they are concentric spheres.
(d) They can be imaginary spheres.

2. An electric dipole placed in an electric field of intensity 2 × 105 N/C at an angle of 30° experiences a torque equal to 4 Nm. The charge on the dipole of dipole length 2 cm is
(a) 7 µC
(b) 8 mC
(c) 2 mC
(d) 5 mC

3. A metallic plate exposed to white light emits electrons. For which of the following colours of light, the stopping potential will be maximum?
(a) Blue
(b) Yellow
(c) Red
(d) Violet

4. When alpha particles are sent through a thin gold foil, most of them go straight through the foil, because
(a) alpha particles are positively charged
(b) the mass of an alpha particle is more than the mass of an electron
(c) most of the part of an atom is empty space
(d) alpha particles move with high velocity

5.A An electron is moving along positive x-axis in a magnetic field which is parallel to the positive y-axis. In what direction will the magnetic force be acting on the electron?
(a) Along -x axis
(b) Along -z axis
(c ) Along +z axis
(d) Along -y axis

6. The relative magnetic permeability of a substance X is slightly less than unity and that of substance Y is slightly more than unity, then
(a) X is paramagnetic and Y is ferromagnetic
(b) X is diamagnetic and Y is ferromagnetic
(c) X and Y both are paramagnetic
(d) X is diamagnetic and Y is paramagnetic

7. An ammeter of resistance 0.81 ohm reads up to 1 A. The value of the required shunt to increase the range to 10 A is
(a) 0.9 ohm
(b ) 0.09 ohm
(c) 0.03 ohm
(d) 0.3 ohm

8. A An electron with angular momentum L moving around the nucleus has a magnetic moment given by
(a) e L/ 2m
(b) e L/3m
(c) e L /4m
(d) e L / m

9. 9. The large scale transmission of electrical energy over long distances is done with the use of transformers. The voltage output of the generator is stepped-up because of
(a) reduction of current
(b) reduction of current and voltage both
(c) power loss is cut down
(d) (a ) and (c) both

10. The diagram below shows the electric field (E) and magnetic field (B) components of an electromagnetic wave at a certain time and location. The direction of the propagation of the electromagnetic wave is
(a) perpendicular to E and B and out of plane of the paper
(b) perpendicular to E and B and into the plane of the paper
(c) parallel and in the same direction as E
(d) parallel and in the same direction as B

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