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Day 501: JEE Mains Physics

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

  1. Question 1

    Wave Optics. Asked once: 14 Jun 2022

    25
    Sodium light of wavelengths 650 nm650\text{ }nm and 655 nm655\text{ }nm is used to study diffraction at a single slit of aperture 0.5 mm0.5\text{ }mm. The distance between the slit and the screen is 2.0 m2.0\text{ }m. The separation between the positions of the first maxima of diffraction pattern obtained in the two cases is ____×10−5 m\_\_\_\_ \times10^{- 5}\text{ }m.

  2. Question 2

    Waves. Asked once: 26 Jun 2022

    116
    A set of 20 tuning forks is arranged in a series of increasing frequencies. If each fork gives 4 beats with respect to the preceding fork and the frequency of the last fork is twice the frequency of the first, then the frequency of last fork is ____\_\_\_\_ Hz.

  3. Question 3

    Work, Energy and Power. Asked once: 5 Apr 2024

    16
    A body of mass 50 kg50\text{ }kg is lifted to a height of 20 m20\text{ }m from the ground in the two different ways as shown in the figures. The ratio of work done against the gravity in both the respective cases, will be:

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  4. Question 4

    Alternating Current. Asked once: 27 Jul 2022

    14
    A direct current of 4 A4\text{ }A and an alternating current of peak value 4 A flow through resistance of 3Ω3\Omega and 2Ω2\Omega respectively. The ratio of heat produced in the two resistances in same interval of time will be:

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  5. Question 5

    Atoms. Asked once: 6 Apr 2023

    108
    A small particle of mass mm moves in such a way that its potential energy U=12mω2r2U =\frac{1}{2}m\omega^{2}r^{2} where ω\omega is constant and rr is the distance of the particle from origin. Assuming Bohr's quantization of momentum and circular orbit, the radius of nth n^{\text{th~}} orbit will be proportional to.

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