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JEE Main & Advanced Physics EM Waves Question Bank Mock Test - Electromagnetic Waves and Dual Nature

  • question_answer
    If the intensity of radiation incident on a photocell be increased four times, then the number of photoelectrons and the energy of photoelectrons emitted respectively become

    A) Four times, doubled

    B) Doubled, remains unchanged

    C) Remains unchanged, doubled

    D) Four times, remains unchanged

    Correct Answer: D

    Solution :

    [d] Since the number of photoelectrons emitted is directly proportional to the intensity of incident radiation, the number of photoelectrons emitted becomes four times. The energy of photoelectrons does not change with the intensity light.


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