PYQ Vault

Day 361: JEE Mains Physics

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

  1. Question 1

    Current Electricity. Asked once: 2021 Paper 1 (same type asked 4 times) See all 4 of this type

    10
    A current through a wire depends on time as i=α0t+βt2i=\alpha_{0}t+\beta t^{2} where α0=20 A/s\alpha_{0}= 20\text{ }A/s and β=8As−2\beta= 8As^{- 2}. Find the charge crossed through a section of the wire in 15 s15\text{ }s.

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  2. Question 2

    Laws of Motion. Asked once: 2021 Paper 5 (same type asked 4 times) See all 4 of this type

    3
    A block of mass mm slides along a floor while a force of magnitude FF is applied to it at an angle θ\theta as shown in figure. The coefficient of kinetic friction is μK\mu_{K}. Then, the block's acceleration ' aa ' is given by : ( gg is acceleration due to gravity)

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  3. Question 3

    Motion in a Plane. Asked once: 25 Jun 2022 (same type asked 4 times) See all 4 of this type

    97
    For a particle in uniform circular motion, the acceleration a→\overrightarrow{a} at any point P(R,θ)P(R,\theta) on the circular path of radius RR is (when θ\theta is measured from the positive xx-axis and vv is uniform speed):

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  4. Question 4

    Mechanical Properties of Fluids. Asked once: 6 Apr 2024 (same type asked 4 times) See all 4 of this type

    106
    Pressure inside a soap bubble is greater than the pressure outside by an amount: (given: R=R = Radius of bubble, S=S = Surface tension of bubble)

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  5. Question 5

    Moving Charges and Magnetism. Asked once: 2021 Paper 15 (same type asked 4 times) See all 4 of this type

    13
    Two charges of equal magnitude are thrown with speeds ratio (3:2)(3:2) perpendicular to the magnetic field. If their masses are in the ratio of 1:21:2. Find ratio of the radii?

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