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Day 99: JEE Mains Physics

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

  1. Question 1

    Gravitation. Asked 2 times: 30 Jan 2023, 15 Apr 2023 See all 2 times it was asked

    10
    A body is released from a height equal to the radius (R) of the earth. The velocity of the body when it strikes the surface of the earth will be: (Given g=g = acceleration due to gravity on the earth.)

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  2. Question 2

    Nuclei. Asked 2 times: 12 Apr 2023*, 13 Apr 2023 (* = numbers or wording changed that year) See all 2 times it was asked

    20
     92238 A→ 90234 B+ 24D+Q\ _{92}^{238}\text{ }A \rightarrow\ _{90}^{234}\text{ }B +\ _{2}^{4}D + Q In the given nuclear reaction, the approximate amount of energy released will be : [Given, mass of  92238 A=238.05079×931.5MeV/c2\ _{92}^{238}\text{ }A = 238.05079 \times 931.5MeV/c^{2}, mass of  90234 B=234.04363×931.5MeV/c2\ _{90}^{234}\text{ }B = 234.04363 \times 931.5MeV/c^{2}, mass of  24D=4.00260×931.5MeV/c2\ _{2}^{4}D = 4.00260 \times 931.5MeV/c^{2} ]

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  3. Question 3

    Oscillations. Asked 2 times: 2021 Paper 7, 13 Apr 2023 See all 2 times it was asked

    95
    A particle executes SHM of amplitude A. The distance from the mean position when its's kinetic energy becomes equal to its potential energy is:

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  4. Question 4

    Oscillations. Asked 2 times: 11 Apr 2023, 13 Apr 2023 See all 2 times it was asked

    19
    Which graph represents the difference between total energy and potential energy of a particle executing SHM Vs it's distance from mean position?

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  5. Question 5

    Electromagnetic Induction. Asked 2 times: 29 Jan 2023*, 12 Apr 2023 (* = numbers or wording changed that year) See all 2 times it was asked

    24
    A conducting circular loop is placed in a uniform magnetic field of 0.4 T0.4\text{ }T with its plane perpendicular to the field. Somehow, the radius of the loop starts expanding at a constant rate of 1 mm/s1\text{ }mm/s. The magnitude of induced emf in the loop at an instant when the radius of the loop is 2 cm2\text{ }cm will be____ μV\mu V.