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Day 321: JEE Mains Physics

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

  1. Question 1

    Electromagnetic Induction. Asked once: 31 Jan 2023 (same type asked 3 times) See all 3 of this type

    13
    Spherical insulating ball and a spherical metallic ball of same size and mass are dropped from the same height. Choose the correct statement out of the following. (Assume negligible air friction.)

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  2. Question 2

    Electromagnetic Induction. Asked once: 25 Jan 2023 (same type asked 3 times) See all 3 of this type

    92
    A wire of length 1 m1\text{ }m moving with velocity 8 m/s8\text{ }m/s at right angles to a magnetic field of 2 T2\text{ }T. The magnitude of induced emf, between the ends of wire will be

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  3. Question 3

    Electromagnetic Induction. Asked once: 2021 Paper 18 (same type asked 3 times) See all 3 of this type

    7
    An inductor coil stores 64 J64\text{ }J of magnetic field energy and dissipates energy at the rate of 640 W640\text{ }W when a current of 8 A8\text{ }A is passed through it. If this coil is joined across an ideal battery, find the time constant of the circuit in seconds:

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  4. Question 4

    Gravitation. Asked once: 2021 Paper 18 (same type asked 3 times) See all 3 of this type

    4
    Inside a uniform spherical shell: (A) the gravitational field is zero (B) the gravitational potential is zero (C) the gravitational field is same everywhere (D) the gravitation potential is same everywhere (E) all of the above Choose the most appropriate answer from the options given below:

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  5. Question 5

    Laws of Motion. Asked once: 29 Jun 2022 (same type asked 3 times) See all 3 of this type

    11
    A block of metal weighing 2 kg2\text{ }kg is resting on a frictionless plane (as shown in figure). It is struck by a jet releasing water at a rate of 1kgs−11kgs^{- 1} and at a speed of 10 ms−110{\text{ }ms}^{- 1}. Then, the initial acceleration of the block (in ms−2ms^{- 2}) will be:

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