PYQ Vault

Day 61: MH HSC Class 12 Physics

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

  1. Question 1

    Rotational Dynamics. Asked once: Mar 2016 (same type asked 3 times)

    Q. 2(vii)
    A body of moment of inertia 5 kgm25\text{ kgm}^{2} rotating with an angular velocity 6 rad/s has the same kinetic energy as a mass of 20 kg moving with a velocity of _________.

    Tap an option to check your answer.

  2. Question 2

    Kinetic Theory of Gases and Radiation. Asked once: Mar 2016 (same type asked 3 times)

    Q. 3
    A metal sphere cools at the rate of 4∘C/min.4^{\circ}\text{C}/\text{min.} when its temperature is 50∘C50^{\circ}\text{C}. Find its rate of cooling at 45∘C45^{\circ}\text{C} if the temperature of surroundings is 25∘C25^{\circ}\text{C}.

  3. Question 3

    Wave Optics. Asked once: Mar 2019 (same type asked 6 times)

    Q. 9
    In Young's experiment interference bands were produced on a screen placed at 150 cm from two slits, 0.15 mm apart and illuminated by the light of wavelength 6500 A˚6500\text{ Å}. Calculate the fringe width.

  4. Question 4

    Rotational Dynamics. Asked once: Mar 2022 (same type asked 5 times)

    Q. 2(viii)
    Calculate the moment of inertia of a uniform disc of mass 10 kg and radius 60 cm about an axis perpendicular to its length and passing through its centre.

  5. Question 5

    Mechanical Properties of Fluids. Asked once: Feb 2023 (same type asked 4 times)

    Q. 3
    Define coefficient of viscosity. State its formula and S.I. units.