PYQ Vault

Day 54: MH HSC Class 12 Physics

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

  1. Question 1

    Superposition of Waves. Asked once: Mar 2016 (same type asked 5 times)

    Q. 3 OR
    Explain analytically how the stationary waves are formed. Hence show that the distance between node and adjacent antinode is λ4\frac{\lambda}{4} . A set of 48 tuning forks is arranged in a series of descending frequencies such that each fork gives 4 beats per second with the preceding one. The frequency of the first fork is 1.5 times the frequency of the last fork. Find the frequency of the first and 42nd42^{\text{nd}} tuning fork.

  2. Question 2

    Mechanical Properties of Fluids. Asked once: Feb 2024 (same type asked 4 times)

    Q. 12
    A horizontal force of 0.5N is required to move a metal plate of area 10−2m210^{-2}\text{m}^{2} with a velocity of 3×10−2m/s3 \times 10^{-2}\text{m/s}, when it rests on 0.5×10−3m0.5 \times 10^{-3}\text{m} thick layer of glycerin. Find the coefficient of viscosity of glycerin.

  3. Question 3

    Structure of Atoms and Nuclei. Asked once: Feb 2024 (same type asked 4 times)

    Q. 22
    Calculate the wavelength of the first two lines in Balmer series of hydrogen atom.

  4. Question 4

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

    Q. 3
    The electric field intensity outside the charged conducting sphere of radius 'R', placed in a medium of permittivity ϵ\epsilon at a distance 'r' from the centre of the sphere in terms of surface charge density σ\sigma is ___________.

    Tap an option to check your answer.

  5. Question 5

    Superposition of Waves. Asked once: Mar 2017 (same type asked 4 times)

    Q. 2(vii)
    A transverse wave is produced on a stretched string 0.9 m long and fixed at its ends. Find the speed of the transverse wave, when the string vibrates while emitting second overtone of frequency 324 Hz.