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Day 209: JEE Mains Physics

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

  1. Question 1

    Atoms. Asked once: 30 Jan 2024 (same type asked 3 times) See all 3 of this type

    6
    The ratio of the magnitude of the kinetic energy to the potential energy of an electron in the 5th 5^{\text{th~}} excited state of a hydrogen atom is:

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  2. Question 2

    Electrostatics. Asked once: 2021 Paper 25 (same type asked 3 times) See all 3 of this type

    18
    Consider the combination of 2 capacitors C1C_{1} and C2C_{2}, with C2>C1C_{2}>C_{1}, when connected in parallel, the equivalent capacitance is 154\frac{15}{4} times the equivalent capacitance of the same connected in series. Calculate the ratio of capacitors, C2C1\frac{C_{2}}{C_{1}}.

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  3. Question 3

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

    100
    Given below are two statements: Statement I: The contact angle between a solid and a liquid is a property of the material of the solid and liquid as well. Statement II: The rise of a liquid in a capillary tube does not depend on the inner radius of the tube. In the light of the above statements, choose the correct answer from the options given below:

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  4. Question 4

    Motion in a Plane. Asked once: 13 Apr 2023 (same type asked 3 times) See all 3 of this type

    104
    A vehicle of mass 200 kg200\text{ }kg is moving along a levelled curved road of radius 70 m70\text{ }m with angular velocity of 0.2rad/s0.2rad/s. The centripetal force acting on the vehicle is:

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  5. Question 5

    Waves. Asked once: 13 Apr 2023 (same type asked 3 times) See all 3 of this type

    116
    In an experiment with sonometer when a mass of 180 g180\text{ }g is attached to the string, it vibrates with fundamental frequency of 30 Hz30\text{ }Hz. When a mass mm is attached, the string vibrates with fundamental frequency of 50 Hz50\text{ }Hz. The value of mm is ____\_\_\_\_ g.