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Day 45: MHT-CET Physics

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

  1. Question 1

    Rotational Dynamics. This type asked 5 times: 2 May 2023 S2, 11 May 2023 S1, 14 May 2024 S2, 20 Apr 2025 S1, 18 Apr 2026 S1. This one: 18 Apr 2026 S1 See all 5 of this type

    106
    A solid cylinder and a solid sphere having the same mass and radius roll down on the same smooth inclined plane. The ratio of the acceleration of the cylinder (ac)(a_c) to that of the sphere (as)(a_s) is

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  2. Question 2

    Kinetic Theory of Gases. This type asked 5 times: 2 May 2023 S2, 14 May 2024 S2, 19 Apr 2025 S2, 26 Apr 2025 S1, 17 Apr 2026 S2. This one: 17 Apr 2026 S2 See all 5 of this type

    117
    The temperature at which r.m.s. velocity of hydrogen molecules is 4.5 times that of an oxygen molecule at 47∘47^\circ C is (molecular weight of hydrogen and oxygen are 2 and 32 respectively)

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  3. Question 3

    Laws of Motion. This type asked 5 times: 15 May 2023 S2, 14 May 2024 S2, 25 Apr 2025 S1, 13 Apr 2026 S2, 17 Apr 2026 S2. This one: 17 Apr 2026 S2 See all 5 of this type

    104
    A machine gun fires a bullet of mass 40g with a speed of 600 ms−1600\ \mathrm{ms^{-1}}. The person holding the gun can bare maximum force of 168N on it. The number of bullets that can be fired from the gun per second is

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  4. Question 4

    Structure of Atoms and Nuclei. This type asked 5 times: May 2021 S1, May 2022 S1, 16 May 2023 S1, 14 May 2024 S1, 17 Apr 2026 S1. This one: 17 Apr 2026 S1 See all 5 of this type

    145
    For wavelength of visible radiation of Hydrogen spectrum, Balmer gave an equation as λ=xm2m2−4\lambda = \dfrac{xm^2}{m^2 - 4}, where m is the integer value. The value of x in terms of Rydberg's constant R is

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  5. Question 5

    Sound. This type asked 5 times: 3 May 2023 S1, 4 May 2023 S2, 11 May 2024 S1, 11 Apr 2026 S2, 16 Apr 2026 S2. This one: 16 Apr 2026 S2 See all 5 of this type

    124
    A person observes two moving trains. 'A' reaching the station and 'B' leaving the station with equal speed of 30m/s. If both trains emit sounds with frequency 300 Hz, (speed of sound = 330 m/s) difference of frequencies heard by the person will be

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