PYQ Vault

Day 513: JEE Mains Physics

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

  1. Question 1

    Electromagnetic Induction. Asked once: 27 Jul 2022

    114
    A conducting circular loop is placed in X−YX - Y plane in presence of magnetic field B→=(3t3j^+3t2k^)\overrightarrow{B}=\left( 3t^{3}\widehat{j}+ 3t^{2}\widehat{k} \right) in SI unit. If the radius of the loop is 1 m1\text{ }m, the induced emf in the loop, at time, t=2 st = 2\text{ }s is nπVn\pi V. The value of nn is
  2. Question 2

    Electrostatics. Asked once: 7 Apr 2025

    76
    Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : The outer body of an air craft is made of metal which protects persons sitting inside from lightning-strikes. Reason (R) : The electric field inside the cavity enclosed by a conductor is zero. In the light of the above statements, chose the most appropriate answer from the options given below :

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  3. Question 3

    Gravitation. Asked once: 2021 Paper 17

    18
    The planet Mars has two moons, if one of them has a period 7 hours, 30 minutes and an orbital radius of 9.0×103 km9.0 \times10^{3}\text{ }km. Find the mass of Mars. Given  4π2G=6×1011 N−1 m−2 kg2}\left. \ \frac{4\pi^{2}}{G}= 6 \times10^{11}{\text{ }N}^{- 1}{\text{ }m}^{- 2}{\text{ }kg}^{2} \right\}

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  4. Question 4

    Kinetic Theory. Asked once: 27 Jul 2022

    99
    Which statements are correct about degrees of freedom? A. A molecule with nn degrees of freedom has n2n^{2} different ways of storing energy. B. Each degree of freedom is associated with 12\frac{1}{2} RT average energy per mole. C. A monoatomic gas molecule has 1 rotational degree of freedom whereas diatomic molecule has 2 rotational degrees of freedom D. CH4CH_{4} has a total of 6 degrees of freedom Choose the correct answer from the option given below:

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  5. Question 5

    Laws of Motion. Asked once: 27 Jan 2024

    94
    Given below are two statements: Statement (I): The limiting force of static friction depends on the area of contact and independent of materials. Statement (II): The limiting force of kinetic friction is independent of the area of contact and depends on materials. In the light of the above statements, choose the most appropriate answer from the options given below:

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