PYQ Vault

Day 7: MH HSC Class 12 Physics

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

  1. Question 1

    Wave Optics. Asked 2 times: Jul 2024*, Jun 2026 (* = numbers or wording changed that year)

    Q. 10
    A star is emitting light at the wavelength of 4000Å. Determine the limit of angular resolution of a telescope having an objective of diameter of 400 cm.

  2. Question 2

    Current Electricity. Asked 2 times: Feb 2025*, Feb 2026 (* = numbers or wording changed that year)

    Q. 24
    A galvanometer has a resistance of 40 Ω40\ \Omega and a current of 4 mA is needed for full scale deflection. What is the resistance and how is it to be connected to convert the galvanometer (a) into an ammeter of 0.4 A range and (b) into a voltmeter of 5 V range?

  3. Question 3

    Electromagnetic Induction. Asked 2 times: Jul 2024, Feb 2026

    Q. 3
    What are Eddy currents? State its two applications.

  4. Question 4

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

    Q. 8
    An electric dipole consists of two unlike charges of magnitude 2×10−62 \times 10^{-6} C each and separated by 4 cm. The dipole is placed in an external electric field of 10510^{5} N/C. Calculate the work done by an external agent to turn the dipole through 180°.

  5. Question 5

    Magnetic Fields due to Electric Current. Asked 2 times: Jun 2025, Feb 2026

    Q. 9
    Derive an expression for the magnetic field produced by a current in a circular arc of a wire using Biot-Savart law.