(Download) CBSE Class-12 Sample Paper 2023-24 : Physics

Sample Question Paper (Term-1) 2023-24

Subject Name : Physics

Subject Code: 042

Time Allowed: 90

Minutes Maximum Marks: 35

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 2cm 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

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