PYQ Vault

Day 14: JEE Mains Physics

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

  1. Question 1

    Nuclei. This type asked 6 times: 25 Jan 2023, 11 Apr 2023, 31 Jan 2024, 1 Feb 2024, 28 Jan 2026 S1, 28 Jan 2026 S2. This one: 28 Jan 2026 S2 See all 6 of this type

    1
    A nucleus has mass number α\alpha and radius RαR_{\alpha} Another nucleus has mass number β\beta and radius RβR_{\beta}. If β=8α\beta= 8\alpha then Rα/RβR_{\alpha}/R_{\beta} is :

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  2. Question 2

    Moving Charges and Magnetism. This type asked 6 times: 26 Jun 2022, 28 Jun 2022, 29 Jul 2022, 24 Jan 2023, 30 Jan 2023, 28 Jan 2026 S1. This one: 28 Jan 2026 S1 See all 6 of this type

    9
    Three long straight wires carrying current are arranged mutually parallel as shown in the figure. The force experienced by 15 cm length of wire QQ is ____\_\_\_\_ . ( μ0=4π×10−7 T.m/A\mu_{0}= 4\pi\times10^{- 7}\text{ }T.m/A )

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  3. Question 3

    System of Particles and Rotational Motion. This type asked 6 times: 26 Jul 2022, 24 Jan 2023, 6 Apr 2023, 15 Apr 2023, 5 Apr 2024, 28 Jan 2026 S1. This one: 28 Jan 2026 S1 See all 6 of this type

    23
    A solid sphere of radius 10 cm is rotating about an axis which is at a distance 15 cm from its center. The radius of gyration about this axis is n cm\sqrt{n}\text{ }cm. The value of nn is
  4. Question 4

    Current Electricity. This type asked 6 times: 26 Jul 2022, 29 Jan 2023, 1 Feb 2024, 22 Jan 2026 S1, 24 Jan 2026 S1, 24 Jan 2026 S2. This one: 24 Jan 2026 S2 See all 6 of this type

    23
    In a meter bridge experiment to determine the value of unknown resistance, first the resistances 2Ω2\Omega and 3Ω3\Omega are connected in the left and right gaps of the bridge and the null point is obtained at a distance l cml\text{ }cm from the left. Now when an unknown resistance xΩx\Omega is connected in parallel to 3Ω3\Omega resistance, the null point is shifted by 10 cm to the right of wire. The value of unknown resistance x is ____\_\_\_\_ Ω\Omega.
  5. Question 5

    Moving Charges and Magnetism. This type asked 6 times: 29 Jan 2024, 1 Feb 2024, 5 Apr 2024, 9 Apr 2024, 23 Jan 2025, 24 Jan 2026 S2. This one: 24 Jan 2026 S2 See all 6 of this type

    13
    A moving coil galvanometer of resistance 100Ω100\Omega shows a full scale deflection for a current of 1 mA . The value of resistance required to convert this galvanometer into an ammeter, showing full scale deflection for a current of 5 mA , is ____\_\_\_\_ Ω\Omega

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