PYQ Vault

Day 482: JEE Mains Physics

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

  1. Question 1

    Magnetism and Matter. Asked once: 25 Jul 2022

    19
    The magnetic moment of an electron (e) revolving in an orbit around nucleus with an orbital angular momentum is given by :

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  2. Question 2

    Mechanical Properties of Fluids. Asked once: 4 Apr 2024

    120
    Mercury is filled in a tube of radius 2 cm2\text{ }cm up to a height of 30 cm30\text{ }cm. The force exerted by mercury on the bottom of the tube is _____ NN. (Given, atmospheric pressure =105Nm−2=10^{5}Nm^{- 2}, density of mercury =1.36×104 kg m−3, g=10 ms−2= 1.36 \times10^{4}\text{ }kg{\text{ }m}^{- 3},\text{ }g = 10{\text{ }ms}^{- 2},  π=227)\left. \ \pi =\frac{22}{7} \right)
  3. Question 3

    Mechanical Properties of Solids. Asked once: 24 Jan 2023

    106
    Given below are two statements: one is labelled as Assertion AA and the other is labelled as Reason Assertion A: Steel is used in the construction of buildings and bridges. Reason R: Steel is more elastic and its elastic limit is high. In the light of above statements, choose the most appropriate answer from the options given below

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  4. Question 4

    Motion in a Plane. Asked once: 6 Apr 2024

    30
    For three vectors A→=(−xi^−6j^−2k^)\overrightarrow{A}= ( - x\widehat{i}- 6\widehat{j}- 2\widehat{k}), B→=(−i^+4j^+3k^)\overrightarrow{B}= ( -\widehat{i}+ 4\widehat{j}+ 3\widehat{k}) and  C→=(−8i^−j^+3k^),\ \overrightarrow{C}= ( - 8\widehat{i}-\widehat{j}+ 3\widehat{k}), if A→⋅(B→×C→)=0\overrightarrow{A}\cdot (\overrightarrow{B}\times\overrightarrow{C}) = 0, them value of xx is__________ .
  5. Question 5

    Motion in a Straight Line. Asked once: 29 Jan 2025

    100
    Two cars P and Q are moving on a road in the same direction. Acceleration of car PP increases linearly with time whereas car QQ moves with a constant acceleration. Both cars cross each other at time t=0t = 0, for the first time. The maximum possible number of crossing(s) (including the crossing at t=0t = 0 ) is  ____\ \_\_\_\_