PYQ Vault

Day 3: MH HSC Class 12 Physics

5 questions. Try each one first, then open its answer.

  1. Question 1

    Superposition of Waves. Asked 3 times: Feb 2023*, Feb 2024*, Jun 2025 (* = numbers or wording changed that year)

    Q. 12
    Two tuning forks having frequencies 160 Hz and 170 Hz are sounded together to produce sound waves. The velocity of sound in air is 326.4 ms−1326.4\ \text{ms}^{-1}. Calculate the difference between wavelengths of these waves.

  2. Question 2

    Thermodynamics. Asked 3 times: Feb 2023, Feb 2024, Jun 2025

    Q. 27
    Define isothermal process. Obtain an expression for work done during isothermal process. Draw P–V diagram.

  3. Question 3

    Wave Optics. Asked 3 times: Mar 2019, Jul 2024, Feb 2025

    Q. 17
    What is Brewster's law? Derive the formula for Brewster's angle.

  4. Question 4

    Current Electricity. Asked 3 times: Feb 2023, Feb 2024, Jul 2024

    Answer the following questions :
    Q. 2(iv)
    What is the resistance of an ideal voltmeter?

  5. Question 5

    Dual Nature of Radiation and Matter. Asked 3 times: Feb 2023, Feb 2024, Jul 2024

    Q. 30
    What is photoelectric effect? Describe with neat circuit diagram an experimental setup of photoelectric effect.