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Dual Nature of ...

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  • Question 1
    4 / -1

    Energy of photon of light having two different frequencies are 2 eV and 10 eV respectively. If both are incident on the metal having work function 1 eV, ratio of maximum velocities of emitted electron is.................

  • Question 2
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    What will be velocity of particle having mass 3 times the rest mass ? (c = 3 × 108 m/s)

  • Question 3
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    De-Broglie wavelength of particle moving at a 1/4 th of speed of light having rest mass m0 is.........

  • Question 4
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    Work function of metal is 2.5 eV. If wave length of light incident on metal plate is 3000 Å , stopping potential of emitted electron will be.............

  • Question 5
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    An electron enters perpendicularly into uniform magnetic field having magnitude 0.5 × 10–4 T . If it moves on a circular path of radius 2 mm, its de - Broglie wavelength is ......... Å

  • Question 6
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    In photoelectric effect, work function of mateal is 3.5 eV. By applying - 1.2V potential, photo electric current becomes zero, so..........

  • Question 7
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    Work function of tungsten and sodium are 4.5 eV and 2.3 eV respectively. If threshold wavelength for sodium is 5460 A, threshold frequnecy for tungsten will be................

  • Question 8
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    Ration of momentum of photons having wavelength 4000 Å & 8000 Å is..............

  • Question 9
    4 / -1

    Work function of metal is 4.2 eV. If ultraviolet radiation (photon) having energy 6.2 eV, stopping potential will be..................

  • Question 10
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    If intensity of incident light is increased,.........of photo electrons will increase.

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