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Day 199: JEE Mains Physics

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

  1. Question 1

    Current Electricity. Asked once: 24 Jan 2023 (same type asked 3 times) See all 3 of this type

    119
    Three identical resistors with resistance R=12ΩR = 12\Omega and two identical inductors with self-inductance LL =5mH= 5mH are connected to an ideal battery with emf of 12 V12\text{ }V as shown in figure. The current through the battery long after the switch has been closed will be____ A.

  2. Question 2

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

    22
    The intensity of the light from a bulb incident on a surface is 0.22 W/m20.22\text{ }W/m^{2}. The amplitude of the magnetic field in this light-wave is ____×10−9 T\_\_\_\_ \times10^{- 9}\text{ }T (Given: Permittivity of vacuum ϵ0=8.85×10−12C2 N−1 m−2\epsilon_{0}= 8.85 \times10^{- 12}C^{2}{\text{ }N}^{- 1}{\text{ }m}^{- 2}, speed of light in vacuum c=3×108 ms−1c = 3 \times10^{8}{\text{ }ms}^{- 1} )

  3. Question 3

    Gravitation. Asked once: 4 Apr 2024 (same type asked 3 times) See all 3 of this type

    98
    Correct formula for height of a satellite from earths surface is :

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  4. Question 4

    Waves. Asked once: 6 Apr 2024 (same type asked 3 times) See all 3 of this type

    119
    Two open organ pipes of length 60 cm60\text{ }cm and 90 cm90\text{ }cm resonate at 6th 6^{\text{th~}} and 5th 5^{\text{th~}} harmonics respectively. The difference of frequencies for the given modes is _____ HzHz. (Velocity of sound in air =333 m/s= 333\text{ }m/s )

  5. Question 5

    Work, Energy and Power. Asked once: 7 Apr 2025 (same type asked 3 times) See all 3 of this type

    91
    Which one of the following forces cannot be expressed in terms of potential energy?

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