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Day 89: JEE Mains Physics

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

  1. Question 1

    System of Particles and Rotational Motion. Asked 2 times: 2021 Paper 13*, 4 Apr 2025 (* = numbers or wording changed that year) See all 2 times it was asked

    87
    A wheel is rolling on a plane surface. The speed of a particle on the highest point of the rim is 8 m/s8\text{ }m/s. The speed of the particle on the rim of the wheel at the same level as the centre of wheel, will be :

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  2. Question 2

    Wave Optics. Asked 2 times: 27 Jan 2024, 4 Apr 2025 See all 2 times it was asked

    90
    Two polarisers P1P_{1} and P2P_{2} are placed in such a way that the intensity of the transmitted light will be zero. A third polariser P3P_{3} is inserted in between P1P_{1} and P2P_{2}, at the particular angle between P2P_{2} and P3P_{3}. The transmitted intensity of the light passing the through all three polarisers is maximum. The angle between the polarisers P2P_{2} and P3P_{3} is :

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  3. Question 3

    Kinetic Theory. Asked 2 times: 25 Jun 2022, 3 Apr 2025 See all 2 times it was asked

    92
    Pressure of an ideal gas, contained in a closed vessel, is increased by 0.4%0.4\% when heated by 1∘C1^{\circ}C. Its initial temperature must be :

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  4. Question 4

    Mechanical Properties of Fluids. Asked 2 times: 27 Jul 2022*, 3 Apr 2025 (* = numbers or wording changed that year) See all 2 times it was asked

    78
    Two cylindrical vessels of equal cross sectional area of 2 m22{\text{ }m}^{2} contain water upto height 10 m and 6 m , respectively. If the vessels are connected at their bottom then the work done by the force of gravity is : (Density of water is 103 kg/m310^{3}\text{ }kg/m^{3} and g=10 m/s2g = 10\text{ }m/s^{2} )

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  5. Question 5

    Thermodynamics. Asked 2 times: 23 Jan 2025*, 3 Apr 2025 (* = numbers or wording changed that year) See all 2 times it was asked

    12
    A gas is kept in a container having walls which are thermally non-conducting. Initially the gas has a volume of 800 cm3800{\text{ }cm}^{3} and temperature 27∘C27^{\circ}C. The change in temperature when the gas is adiabatically compressed to 200 cm3200{\text{ }cm}^{3} is : (Take γ=1.5:γ\gamma= 1.5:\gamma is the ratio of specific heats at constant pressure and at constant volume)

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