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Day 397: JEE Mains Physics

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

  1. Question 1

    Gravitation. Asked once: 29 Jan 2023 (same type asked 14 times) See all 14 of this type

    105
    The time period of a satellite of earth is 24 hours. If the separation between the earth and the satellite is decreased to one fourth of the previous value, then its new time period will become.

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  2. Question 2

    Electrostatics. Asked once: 30 Jan 2024 (same type asked 12 times) See all 12 of this type

    27
    A capacitor of capacitance CC and potential VV has energy E. It is connected to another capacitor of capacitance 2C2C and potential 2 V2\text{ }V. Then the loss of energy is x3E\frac{x}{3}E, where xx is _______ .

  3. Question 3

    Ray Optics. Asked once: 15 Apr 2023 (same type asked 12 times) See all 12 of this type

    26
    The refractive index of a transparent liquid filled in an equilateral hollow prism is 2\sqrt{2}. The angle of minimum deviation for the liquid will be ___ ∘^{\circ}.

  4. Question 4

    Electromagnetic Waves. Asked once: 26 Jul 2022 (same type asked 11 times) See all 11 of this type

    96
    The oscillating magnetic field in a plane electromagnetic wave is given by By=5×10−6sin⁡B_{y}= 5 \times10^{- 6}\sin 1000π(5x−4×108t)T1000\pi\left( 5x - 4 \times10^{8}t \right)T. The amplitude of electric field will be:

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  5. Question 5

    Thermodynamics. Asked once: 2021 Paper 24 (same type asked 11 times) See all 11 of this type

    21
    The temperature of 3.00 mol3.00\text{ }mol of an ideal diatomic gas is increased by 40.0∘C40.0^{\circ}C without changing the pressure of the gas. The molecules in the gas rotate but do not oscillate. If the ratio of change in internal energy of the gas to the amount of workdone by the gas is x10\frac{x}{10}. Then the value of xx (round off to the nearest integer) is (Given R=8.31 J mol−1 K−1R = 8.31\text{ }J{\text{ }mol}^{- 1}{\text{ }K}^{- 1} )