PYQ Vault

Day 4: MH HSC Class 12 Physics

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

  1. Question 1

    Mechanical Properties of Fluids. Asked 3 times: Feb 2023, Feb 2024, Jul 2024

    Q. 15
    Define surface tension. Obtain the relation between surface tension and surface energy.

  2. Question 2

    Superposition of Waves. Asked 3 times: Mar 2017, Mar 2019, Feb 2024

    Q. 20
    Derive an expression for equation of stationary wave on a stretched string. Show that the distance between two successive nodes or antinodes is λ/2\lambda/2.

  3. Question 3

    AC Circuits. Asked 2 times: Mar 2022, Jun 2026

    Q. 21
    Define the terms : (a) Inductive reactance (b) Capacitive reactance (c) Impedance

  4. Question 4

    AC Circuits. Asked 2 times: Feb 2023*, Jun 2026 (* = numbers or wording changed that year)

    Q. 14
    An alternating voltage source given by e=140sin⁡(314.2 t)e = 140 \sin(314.2\,t) is connected across a pure resistor of 50 Ω50\ \Omega. Determine : (i) Frequency of the source. (ii) RMS value of emf.

  5. Question 5

    Current Electricity. Asked 2 times: Feb 2020, Jun 2026

    Q. 23
    Two resistances XX and YY in the two gaps of a meterbridge give a null point dividing the wire in the ratio 4 : 6. If both resistances are increased by 30 Ω30\ \Omega, the null point divides the wire in the ratio 5 : 6. Calculate the value of XX and YY.