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Day 51: JEE Mains Physics

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

  1. Question 1

    Kinetic Theory. This type asked 4 times: 2021 Paper 10, 25 Jun 2022, 29 Jan 2023, 13 Apr 2023. This one: 13 Apr 2023 See all 4 of this type

    13
    The rms speed of oxygen molecule in a vessel at particular temperature is (1+5x)12v\left( 1 +\frac{5}{x} \right)^{\frac{1}{2}}v, where vv is the average speed of the molecule. The value of xx will be:(Take π=227\pi =\frac{22}{7} )

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  2. Question 2

    Gravitation. This type asked 4 times: 26 Jun 2022, 24 Jan 2023, 1 Feb 2023, 10 Apr 2023. This one: 10 Apr 2023 See all 4 of this type

    97
    Given below are two statements: Statement I: Rotation of the earth shows effect on the value of acceleration due to gravity (g). Statement II: The effect of rotation of the earth on the value of ' gg ' at the equator is minimum and that at the pole is maximum. In the light of the above statements, choose the correct answer from the options given below.

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  3. Question 3

    Dual Nature of Radiation and Matter. This type asked 4 times: 2021 Paper 26, 14 Jun 2022, 28 Jul 2022, 1 Feb 2023. This one: 14 Jun 2022 See all 4 of this type

    108
    The light of two different frequencies whose photons have energies 3.8eV3.8eV and 1.4eV1.4eV respectively, illuminate a metallic surface whose work function is 0.6eV0.6eV successively. The ratio of maximum speeds of emitted electrons for the two frequencies respectively will be:

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  4. Question 4

    Current Electricity. This type asked 4 times: 2021 Paper 6, 2021 Paper 23, 25 Jun 2022, 31 Jan 2023. This one: 31 Jan 2023 See all 4 of this type

    99
    The HH amount of thermal energy is developed by a resistor in 10 s10\text{ }s when a current of 4 A4\text{ }A is passed through it. If the current is increased to 16 A16\text{ }A, the thermal energy developed by the resistor in 10 s10\text{ }s will be:

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  5. Question 5

    Electromagnetic Waves. This type asked 4 times: 2021 Paper 25, 14 Jun 2022, 29 Jul 2022, 30 Jan 2023. This one: 30 Jan 2023 See all 4 of this type

    98
    A point source of 100 W100\text{ }W emits light with 5%5\% efficiency. At a distance of 5 m5\text{ }m from the source, the intensity produced by the electric field component is:

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