PYQ Vault

Day 72: MH HSC Class 12 Physics

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

  1. Question 1

    Magnetic Fields due to Electric Current. Asked once: Feb 2025

    Q. 26
    A solenoid of length π\pi m and 5 cm in diameter has a winding of 1000 turns and carries a current of 5A. Calculate the magnetic field at its centre along the axis.

  2. Question 2

    Magnetic Materials. Asked once: Feb 2025

    Answer the following questions :
    Q. 2(v)
    What is value of B called, when H = 0 is in the hysteresis loop?

  3. Question 3

    Mechanical Properties of Fluids. Asked once: Jun 2025

    Answer the following questions :
    Q. 2(viii)
    In a hydraulic lift, area of pistons are A1A_1 and A2A_2 respectively (A2≫A1)(A_2 \gg A_1). If force F1F_1 is applied on piston 1, then what is the force exerted on piston 2?

  4. Question 4

    Oscillations. Asked once: Feb 2020

    Q. 23
    A simple pendulum of length 1 m has mass 10 g and oscillates freely with amplitude of 5 cm. Calculate its potential energy at extreme position.

  5. Question 5

    Rotational Dynamics. Asked once: Feb 2025

    Q. 23
    A flywheel of a motor has mass 100 kg and radius 1.5 m. The motor develops a constant torque of 2000 Nm. The flywheel starts rotating from rest. Calculate the work done during the first 4 revolutions.