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Day 91: JEE Mains Physics

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

  1. Question 1

    Mechanical Properties of Fluids. Asked 2 times: 27 Jan 2024*, 23 Jan 2025 (* = numbers or wording changed that year) See all 2 times it was asked

    83
    Water flows in a horizontal pipe whose one end is closed with a valve. The reading of the pressure gauge attached to the pipe is P1P_{1}. The reading of the pressure gauge falls to P2P_{2} when the valve is opened. The speed of water flowing in the pipe is proportional to

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  2. Question 2

    Mechanical Properties of Solids. Asked 2 times: 4 Apr 2024*, 23 Jan 2025 (* = numbers or wording changed that year) See all 2 times it was asked

    95
    A massless spring gets elongated by amount X1X_{1} under a tension of 5 N . Its elongation is x2x_{2} under the tension of 7 N . For the elongation of (5x1−2x2)\left( 5x_{1}- 2x_{2} \right), the tension in the spring will be,

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  3. Question 3

    Ray Optics. Asked 2 times: 6 Apr 2024, 23 Jan 2025 See all 2 times it was asked

    78
    The refractive index of the material of a glass prism is 3\sqrt{3}. The angle of minimum deviation is equal to the angle of the prism. What is the angle of the prism?

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  4. Question 4

    Mechanical Properties of Fluids. Asked 2 times: 2021 Paper 7*, 22 Jan 2025 (* = numbers or wording changed that year) See all 2 times it was asked

    21
    Two soap bubbles of radius 2 cm and 4 cm , respectively, are in contact with each other. The radius of curvature of the common surface, in cm , is ____ .

  5. Question 5

    Motion in a Plane. Asked 2 times: 29 Jul 2022*, 22 Jan 2025 (* = numbers or wording changed that year) See all 2 times it was asked

    99
    A tube of length 1 m is filled completely with an ideal liquid of mass 2 M, and closed at both ends. The tube is rotated uniformly in horizontal plane about one of its ends. If the force exerted by the liquid at the other end is F then angular velocity of the tube is FαM\sqrt{\frac{F}{\alpha M}} in SI unit. The value of α\alpha is_____