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Day 261: JEE Mains Physics

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

  1. Question 1

    System of Particles and Rotational Motion. Asked once: 4 Apr 2024 (same type asked 7 times) See all 7 of this type

    30
    A solid sphere and a hollow cylinder roll up without slipping on same inclined plane with same initial speed vv. The sphere and the cylinder reaches upto maximum heights h1h_{1} and h2h_{2}, respectively, above the initial level. The ratio h1:h2h_{1}:h_{2} is n10\frac{n}{10}. The value of nn is ____ .

  2. Question 2

    Mechanical Properties of Solids. Asked once: 29 Jun 2022 (same type asked 7 times) See all 7 of this type

    6
    A wire of length LL is hanging from a fixed support. The length changes to L1L_{1} and L2L_{2} when masses 1 kg1\text{ }kg and 2 kg2\text{ }kg are suspended respectively from its free end. Then the value of LL is equal to:

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  3. Question 3

    Motion in a Straight Line. Asked once: 30 Jan 2023 (same type asked 7 times) See all 7 of this type

    96
    A vehicle travels 4 km4\text{ }km with speed of 3 km/h3\text{ }km/h and another 4 km4\text{ }km with speed of 5 km/h5\text{ }km/h, then its average speed is

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  4. Question 4

    Thermal Properties of Matter. Asked once: 12 Apr 2023 (same type asked 7 times) See all 7 of this type

    11
    A body cools from 80∘C80^{\circ}C to 60∘C60^{\circ}C in 5 minutes. The temperature of the surrounding is 20∘C20^{\circ}C. The time it takes to cool from 60∘C60^{\circ}C to 40∘C40^{\circ}C is:

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  5. Question 5

    Dual Nature of Radiation and Matter. Asked once: 2021 Paper 16 (same type asked 7 times) See all 7 of this type

    4
    A particle of mass 9.1×10−31 kg9.1 \times10^{- 31}\text{ }kg moving with a velocity 106 m/s10^{6}\text{ }m/s has de Broglie wavelength λ1\lambda_{1}. A photon of momentum 10−27kgm/s10^{- 27}kgm/s has wavelength λ2⋅\lambda_{2}\cdot Find λ2λ1\frac{\lambda_{2}}{\lambda_{1}}

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