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Dual Nature of ...

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  • Question 1
    4 / -1

    An electromagnetic radiation has an energy of 13.2 keV. Then the radiation belongs to the region of

  • Question 2
    4 / -1

    As the intensity of incident light increases

  • Question 3
    4 / -1

    Light of wavelength 5000 Å falls on a sensitive plate with photoelectric work fucntion of 1.9 eV. The kinetic energy of the photoelectron emitted will be

  • Question 4
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    Which of the following is dependent on the intensity of incident radiation in a photoelectric experiment?

  • Question 5
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    The maximum kinetic energy of photoelectrons emitted from a surface when photons of energy of 6 eV fall on it is 4 eV. The stopping potential in volts is

  • Question 6
    4 / -1

    Work function of a metal is 2.1 eV. Which of the waves of the following wavelengths will be able to emit photoelectrons from its surface

  • Question 7
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    The frequency of the incident light falling on a photosensitive metal plate is doubled, the kinetic energy of the emitted photoelectrons is

  • Question 8
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    When light of wavelength 300 nm (nanometer) falls on a photoelectric emitter, photoelectrons are liberated. For another emitter, however light of 600 nm wavelength is sufficient for creating photoemission. What is the ratio of the work functions of the two emitters

  • Question 9
    4 / -1

    Threshold wavelength for photoelectric effect on sodium is 5000 Å. Its work function is

  • Question 10
    4 / -1

    The cathode of a photoelectric cell is changed such that the work function changes from W1 to W2 (W2> W1). If the current before and after change are I1 and I2, all other conditions remaining unchanged, then (assuming hv> W2)

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