PYQ Vault

Day 64: MH HSC Class 12 Physics

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

  1. Question 1

    Wave Optics. Asked once: Mar 2018 (same type asked 6 times)

    Q. 7(iii)
    In a biprism experiment, light of wavelength 5200 A˚5200\text{ Å} is used to get an interference pattern on the screen. The fringe width changes by 1.3 mm when the screen is moved towards biprism by 50 cm. Find the distance between two virtual images of the slit.

  2. Question 2

    Wave Optics. Asked once: Mar 2016 (same type asked 6 times)

    Q. 8(ii)
    In biprism experiment, 10th dark band is observed at 2.09 mm from the central bright point on the screen with red light of wavelength 6400 A˚6400\text{ Å}. By how much will fringe width change if blue light of wavelength 4800 A˚4800\text{ Å} is used with the same setting?

  3. Question 3

    AC Circuits. Asked once: Feb 2026

    Q. 16
    Derive an expression for resonant frequency of series resonant circuit.

  4. Question 4

    Current Electricity. Asked once: Jun 2026

    Answer the following questions :
    Q. 2(ii)
    State Kirchhoff's first law for electrical network.

  5. Question 5

    Dual Nature of Radiation and Matter. Asked once: Feb 2026

    Q. 20
    Obtain an expression for the de-Broglie wavelength associated with an electron accelerated from rest through a potential difference of 'V' volts.