CBSE Class 12 Physics Exam 2025 Most Repeated Questions

1

State Gauss’s theorem and apply it to find the electric field due to an infinitely long straight uniformly charged wire.

2

State and explain Kirchhoff's laws with an example.

3

Derive the expression for the force acting on a charged particle moving in a uniform magnetic field.

4

Derive the lens maker’s formula for a convex lens.

5

State the conditions for constructive and destructive interference in Young's Double Slit Experiment (YDSE).

6

Explain Huygens' principle and use it to prove the laws of reflection or refraction.

7

Explain the working of a p-n junction diode.

8

State Biot-Savart law. Use it to derive the expression for the magnetic field at the center of a circular loop carrying current.

9

State Faraday’s laws of electromagnetic induction and derive the expression for induced EMF in a coil.

10

Explain the concept of resonance in an AC circuit. What is the condition of the resonance?