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Day 534: JEE Mains Physics

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

  1. Question 1

    Current Electricity. Asked once: 3 Apr 2025

    25
    In the figure shown below, a resistance of 150.4Ω150.4\Omega is connected in series to an ammeter A of resistance 240Ω240\Omega. A shunt resistance of 10Ω10\Omega is connected in parallel with the ammeter. The reading of the ammeter is ____\_\_\_\_ mA.

  2. Question 2

    Dual Nature of Radiation and Matter. Asked once: 2021 Paper 23

    8
    Consider two separate ideal gases of electrons and protons having same number of particles. The temperature of both the gases are same. The ratio of the uncertainty in determining the position of an electron to that of a proton is proportional to:-

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  3. Question 3

    Electrostatics. Asked once: 4 Apr 2025

    85
    Three parallel plate capacitors C1,C2C_{1},C_{2} and C3C_{3} each of capacitance 5μ F5\mu\text{ }F are connected as shown in figure. The effective capacitance between points A and BB, when the space between the parallel plates of C1C_{1} capacitor is filled with a dielectric medium having dielectric constant of 4 , is :

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  4. Question 4

    Kinetic Theory. Asked once: 27 Jun 2022

    98
    According to kinetic theory of gases, A. The motion of the gas molecules freezes at 0∘C0^{\circ}C B. The mean free path of gas molecules decreases if the density of molecules is increased. C. The mean free path of gas molecules increases if temperature is increased keeping pressure constant. D. Average kinetic energy per molecule per degree of freedom is 32kBT\frac{3}{2}k_{B}T (for monoatomic gases) Choose the most appropriate answer from the options given below:

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  5. Question 5

    Laws of Motion. Asked once: 6 Apr 2023

    99
    A child of mass 5 kg5\text{ }kg is going round a merry-go-round that makes 1 rotation in 3.14 s3.14\text{ }s. The radius of the merry-go-round is 2 m2\text{ }m. The centrifugal force on the child will be

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