PYQ Vault

Day 25: MH HSC Class 12 Physics

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

  1. Question 1

    Mechanical Properties of Fluids. This type asked 3 times: Mar 2018, Feb 2020, Feb 2023. This one: Feb 2023

    Q. 30(ii)
    Calculate the work done in blowing a soap bubble to a radius of 1 cm. The surface tension of soap solution is 2.5×10−2 N/m2.5 \times 10^{- 2}\text{ N/m}.

  2. Question 2

    Rotational Dynamics. This type asked 3 times: Mar 2016, Mar 2018, Feb 2023. This one: Feb 2023

    Answer the following questions:
    Q. 2(v)
    If friction is made zero for a road, can a vehicle move safely on this road?

  3. Question 3

    Rotational Dynamics. This type asked 3 times: Mar 2016, Feb 2020, Mar 2022. This one: Mar 2022

    Q. 19
    Derive an expression for the kinetic energy of a body rotating with a uniform angular speed.

  4. Question 4

    Kinetic Theory of Gases and Radiation. This type asked 3 times: Mar 2016, Mar 2017, Mar 2018. This one: Mar 2018

    Q. 4. B
    A body cools from 80∘C80^{\circ}\text{C} to 70∘C70^{\circ}\text{C} in 5 minutes and to 62∘C62^{\circ}\text{C} in the next 5 minutes. Calculate the temperature of the surroundings.

  5. Question 5

    AC Circuits. This type asked 2 times: Jul 2024, Jun 2026. This one: Jun 2026

    Q. 1(v)
    In a purely inductive and capacitive circuit, power factor is, _____

    Tap an option to check your answer.