PYQ Vault

Day 44: MH HSC Class 12 Physics

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

  1. Question 1

    Rotational Dynamics. Asked once: Feb 2020 (same type asked 3 times)

    Q. 13
    Energy of 1000 J is spent to increase the angular speed of a wheel from 20 rad/s to 30 rad/s. Calculate the moment of inertia of the wheel.

  2. Question 2

    Kinetic Theory of Gases and Radiation. Asked once: Mar 2017 (same type asked 3 times)

    Q. 2(viii)
    A body cools at the rate of 0.5∘C/minute{0.5}^{\circ}\text{C}/\text{minute} when it is 25∘C25^{\circ}\text{C} above the surroundings. Calculate the rate of cooling when it is 15∘C15^{\circ}\text{C} above the same surroundings.

  3. Question 3

    AC Circuits. Asked once: Jul 2024 (same type asked 2 times)

    Q. 1(ix)
    In a series LCR circuit the phase difference between the voltage and the current is 45º. Then the power factor will be ____.

    Tap an option to check your answer.

  4. Question 4

    Current Electricity. Asked once: Feb 2023 (same type asked 2 times)

    Q. 8
    How will you convert a moving coil galvanometer into an ammeter?

  5. Question 5

    Dual Nature of Radiation and Matter. Asked once: Mar 2022 (same type asked 2 times)

    Q. 31
    Explain de Broglie wavelength. Obtain an expression for de Broglie wavelength of wave associated with material particles. The photoelectric work function for a metal is 4.2 eV. Find the threshold wavelength.