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Day 600: JEE Mains Physics

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

  1. Question 1

    Semiconductor Electronics. Asked once: 15 Apr 2023

    20
    In the given circuit, the current (I) through the battery will be:

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  2. Question 2

    System of Particles and Rotational Motion. Asked once: 2021 Paper 11

    18
    A particle of mass mm and speed uu collides elastically with the end of a uniform rod of mass MM and length LL, as shown. The rod is pivoted at its centre (the dot in the figure) and is free to rotate about it. If the particle comes to rest after the collision, find mM\frac{m}{M}.

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  3. Question 3

    Current Electricity. Asked once: 29 Jan 2024

    118
    In the given circuit, the current flowing through the resistance 20Ω20\Omega is 0.3 A0.3\text{ }A, while the ammeter reads 0.9 A0.9\text{ }A. The value of R1R_{1} is ____\_\_\_\_ Ω\Omega.

  4. Question 4

    Electrostatics. Asked once: 10 Apr 2023

    15
    The equivalent capacitance of the combination shown is

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  5. Question 5

    Motion in a Plane. Asked once: 2021 Paper 11

    6
    If A→⋅B→=∣A→×B→∣\overrightarrow{A}\cdot\overrightarrow{B}= |\overrightarrow{A}\times\overrightarrow{B}|, find ∣A→−B→∣|\overrightarrow{A}-\overrightarrow{B}|

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