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Day 327: JEE Mains Physics

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

  1. Question 1

    Mechanical Properties of Fluids. Asked once: 24 Jan 2025 (same type asked 10 times) See all 10 of this type

    7
    The amount of work done to break a big water drop of radius ' R ' into 27 small drops of equal radius is 10 J . The work done required to break the same big drop into 64 small drops of equal radius will be :-

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  2. Question 2

    Electromagnetic Waves. Asked once: 28 Jan 2025 (same type asked 10 times) See all 10 of this type

    94
    The magnetic field of an E.M. wave is given by B→=(32i^+12j^)30sin⁡[ω(t−zc)]\overrightarrow{B}=\left( \frac{\sqrt{3}}{2}\widehat{i}+\frac{1}{2}\widehat{j} \right)30\sin\left\lbrack \omega\left( t -\frac{z}{c} \right) \right\rbrack (S.I. Units) The corresponding electric field in S.I. units is :

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  3. Question 3

    Wave Optics. Asked once: 8 Apr 2024 (same type asked 10 times) See all 10 of this type

    29
    A parallel beam of monochromatic light of wavelength 600 nm600\text{ }nm passes through single slit of 0.4 mm0.4\text{ }mm width. Angular divergence corresponding to second order minima would be _____ ×10−3rad\times10^{- 3}rad.

  4. Question 4

    Units and Measurements. Asked once: 5 Apr 2024 (same type asked 10 times) See all 10 of this type

    107
    A vernier callipers has 20 divisions on the vernier scale, which coincides with 19th 19^{\text{th~}} division on the main scale. The least count of the instrument is 0.1 mm0.1\text{ }mm. One main scale division is equal to _________ mmmm.

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  5. Question 5

    Moving Charges and Magnetism. Asked once: 29 Jun 2022 (same type asked 10 times) See all 10 of this type

    9
    A charged particle moves along circular path in a uniform magnetic field in a cyclotron. The kinetic energy of the charged particle increases to 4 times its initial value. What will be the ratio of new radius to the original radius of circular path of the charged particle:

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