CBSE Class 12 Physics sample papers and practice questions

Sample papers work best after you have revised each chapter. Below are a few Physics MCQs with answers to check yourself. LerkAI can then create a full practice paper in your board's style for any mix of the 14 chapters, time you, and explain every wrong answer. These are practice papers made by LerkAI, not official CBSE papers, so also solve your board's official sample papers.

How to use this page

  1. Choose the chapters you have finished revising.
  2. Generate a timed practice paper with board-style marks.
  3. Attempt it in one sitting without notes.
  4. Read the explanation for every wrong answer and practise your weakest chapter again.

Practice questions with answers

  1. The SI unit of capacitance is:

    Answer: Farad. Capacitance C = Q/V is measured in farad (F).

  2. A convex lens of focal length 20 cm forms an image of an object at infinity at:

    Answer: 20 cm. Rays from infinity converge at the principal focus, 20 cm from the lens.

  3. The de Broglie wavelength of a particle is:

    Answer: h/p. λ = h/p, where p is the particle's momentum.

Chapters

  1. Electric Charges and Fields
  2. Electrostatic Potential and Capacitance
  3. Current Electricity
  4. Moving Charges and Magnetism
  5. Magnetism and Matter
  6. Electromagnetic Induction
  7. Alternating Current
  8. Electromagnetic Waves
  9. Ray Optics and Optical Instruments
  10. Wave Optics
  11. Dual Nature of Radiation and Matter
  12. Atoms
  13. Nuclei
  14. Semiconductor Electronics

Frequently asked questions

Are these official CBSE sample papers?

No. LerkAI creates practice papers in a board-like pattern. Always also solve the official CBSE sample papers.

How many questions can a practice test have?

You can create practice tests with up to 100 questions and an optional timer.

Does LerkAI explain wrong answers?

Yes. After each test you get an explanation for every question you got wrong.

Create a practice paper