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Day 6: JEE Mains Physics

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

  1. Question 1

    Units and Measurements. This type asked 8 times: 2021 Paper 3, 2021 Paper 18, 29 Jul 2022, 30 Jan 2023, 6 Apr 2024, 8 Apr 2024, 23 Jan 2026 S1, 2 Apr 2026 S2. This one: 2 Apr 2026 S2 See all 8 of this type

    7
    In a screw gauge the zero of main scale reference line coincides with the fifth division of the circular scale when two studs are in contact. There are 100 divisions in circular scale and pitch of screw gauge is 0.1 mm . When diameter of a sphere is measured, the reading of main scale is 5 mm and 50th 50^{\text{th~}} division of circular scale coincides with the reference line of main scale. The diameter of sphere is ____\_\_\_\_ mm.

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  2. Question 2

    Moving Charges and Magnetism. This type asked 8 times: 2021 Paper 8, 1 Feb 2023, 10 Apr 2023, 27 Jan 2024, 28 Jan 2025, 3 Apr 2025, 21 Jan 2026 S2, 2 Apr 2026 S1. This one: 2 Apr 2026 S1 See all 8 of this type

    14
    Two identical long current carrying wires are bent into the shapes shown in the following figures. If the magnitude of magnetic fields at the centers P and Q of a semicircular arc are B1B_{1} and B2B_{2} respectively, then the ratio B1 B2\frac{B_{1}}{{\text{ }B}_{2}} is ____\_\_\_\_ . (I) (II)

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  3. Question 3

    Moving Charges and Magnetism. This type asked 8 times: 2021 Paper 17, 25 Jun 2022, 28 Jun 2022, 6 Apr 2023, 8 Apr 2024, 24 Jan 2025, 29 Jan 2025, 28 Jan 2026 S2. This one: 28 Jan 2026 S2 See all 8 of this type

    14
    A long cylindrical conductor with large cross section carries an electric current distributed uniformly over its cross-section. Magnetic field due to this current is : (A) maximum at either ends of the conductor and minimum at the midpoint (B) maximum at the axis of the conductor (C) minimum at the surface of the conductor (D) minimum at the axis of the conductor (E) same at all points in the cross-section of the conductor Choose the correct answer from the options given below :

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  4. Question 4

    Dual Nature of Radiation and Matter. This type asked 8 times: 2021 Paper 13, 25 Jun 2022, 27 Jun 2022, 24 Jan 2023, 6 Apr 2023, 11 Apr 2023, 9 Apr 2024, 28 Jan 2026 S1. This one: 28 Jan 2026 S1 See all 8 of this type

    22
    The ratio of de Broglie wavelength of a deuteron with kinetic energy EE to that of an alpha particle with kinetic energy 2E2E, is n:1n:1. The value of nn is ____\_\_\_\_ . (Assume mass of proton == mass of neutron) :

  5. Question 5

    Moving Charges and Magnetism. This type asked 8 times: 2021 Paper 3, 2021 Paper 18, 14 Jun 2022, 28 Jul 2022, 24 Jan 2023, 8 Apr 2023, 2 Apr 2025, 28 Jan 2026 S1. This one: 28 Jan 2026 S1 See all 8 of this type

    18
    The magnetic field at the center of a current carrying circular loop of radius RR is 16μ T16\mu\text{ }T. The magnetic field at a distance x=3Rx = \sqrt{3}R on its axis from the centre is ____\_\_\_\_ μT\mu T.

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