PYQ Vault

Day 55: MH HSC Class 12 Physics

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

  1. Question 1

    Kinetic Theory of Gases and Radiation. Asked once: Jul 2024 (same type asked 4 times)

    Q. 1(viii)
    The ratio of emissive power of a perfect black body at 927ºC and 327ºC is ____.

    Tap an option to check your answer.

  2. Question 2

    Oscillations. Asked once: Mar 2019 (same type asked 4 times)

    Q. 28
    Obtain an expression for potential energy of a particle performing S.H.M. What is the value of potential energy at (i) mean position and (ii) extreme position?

  3. Question 3

    Current Electricity. Asked once: Mar 2019 (same type asked 4 times)

    Q. 23
    When a resistor of 5Ω5\Omega is connected across the cell, its terminal potential difference is balanced by 150 cm of potentiometer wire and when a resistance of 10Ω10\Omega is connected across the cell, the terminal potential difference is balanced by 175 cm of the same potentiometer wire. Find the balancing length when the cell is in open circuit and the internal resistance of the cell.

  4. Question 4

    Rotational Dynamics. Asked once: Feb 2024 (same type asked 4 times)

    Q. 24
    The radius of a circular track is 200 m. Find the angle of banking of the track, if the maximum speed at which a car can be driven safely along it is 25 m/sec.

  5. Question 5

    Rotational Dynamics. Asked once: Feb 2020 (same type asked 4 times)

    Q. 25
    In a Circus, a motor-cyclist having mass of 50 kg moves in a spherical cage of radius 3 m. Calculate the least velocity with which he must pass the highest point without losing contact. Also calculate his angular speed at the highest point.