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Day 1: JEE Mains Physics

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

  1. Question 1

    Units and Measurements. This type asked 20 times: 3 in 2021, 1 in 2022, 6 in 2023, 1 in 2024, 5 in 2025, 4 in 2026. This one: 6 Apr 2026 S2 See all 20 of this type

    2
    Match List-I with List-II.
    List-IList-II
    (A) Boltzmann constant(I) [M−1L3T−2][M^{-1}L^{3}T^{-2}]
    (B) Stefan's constant(II) [ML2T−1][ML^{2}T^{-1}]
    (C) Planck's constant(III) [ML2T−2K−1][ML^{2}T^{-2}K^{-1}]
    (D) Gravitational constant(IV) [ML0T−3K−4][ML^{0}T^{-3}K^{-4}]
    Choose the correct answer from the options given below.

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  2. Question 2

    Gravitation. This type asked 14 times: 2021 Paper 1, 2021 Paper 3, 2021 Paper 8, 2021 Paper 9, 2021 Paper 24, 14 Jun 2022, 29 Jun 2022, 24 Jan 2023, 29 Jan 2023, 29 Jan 2024, 5 Apr 2024, 23 Jan 2025, 24 Jan 2025, 2 Apr 2026 S1. This one: 2 Apr 2026 S1 See all 14 of this type

    5
    A planet ( P1P_{1} ) is moving around the star of mass 2 M in the orbit of radius R . Another planet ( P2P_{2} ) is moving around another star of mass 4 M in a orbit of radius 2R2R. Ratio of time periods of revolution of P2P_{2} and P1P_{1} is ____\_\_\_\_ .

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  3. Question 3

    Electrostatics. This type asked 12 times: 26 Jun 2022, 27 Jun 2022, 28 Jun 2022, 30 Jan 2023, 8 Apr 2023, 11 Apr 2023, 30 Jan 2024, 1 Feb 2024, 29 Jan 2025, 3 Apr 2025, 22 Jan 2026 S2, 6 Apr 2026 S2. This one: 6 Apr 2026 S2 See all 12 of this type

    15
    A sphere of capacitance 100 pF is charged to a potential of 100 V . Another identical uncharged metal sphere is brought in contact with the charged sphere, then the change in the total energy stored on these spheres, when they touch is α×10−7 J\alpha \times10^{- 7}\text{ }J. The value of α\alpha is ____\_\_\_\_ . (combined capacitance of spheres is 200 pF ).

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  4. Question 4

    Ray Optics. This type asked 12 times: 2021 Paper 13, 28 Jun 2022, 15 Apr 2023, 27 Jan 2024, 31 Jan 2024, 6 Apr 2024, 23 Jan 2025, 2 Apr 2025, 28 Jan 2026 S2, 2 Apr 2026 S1, 5 Apr 2026 S1, 6 Apr 2026 S2. This one: 6 Apr 2026 S2 See all 12 of this type

    17
    Angle of minimum deviation is equal to the half of the angle of prism in an equilateral prism. The refractive index of the prism is ____\_\_\_\_ .

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  5. Question 5

    Electromagnetic Waves. This type asked 11 times: 2021 Paper 5, 2021 Paper 9, 2021 Paper 21, 14 Jun 2022, 25 Jul 2022, 26 Jul 2022, 10 Apr 2023, 11 Apr 2023, 29 Jan 2024, 23 Jan 2025, 2 Apr 2026 S2. This one: 2 Apr 2026 S2 See all 11 of this type

    12
    An electromagnetic wave travels in free space along the xx-direction. At a particular point in space and time, B→=2×10−7j^T\overrightarrow{B}= 2 \times10^{- 7}\widehat{j}T is associated with this wave. The value of corresponding electric field E→\overrightarrow{E} at this point is ____\_\_\_\_ V/m.

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