Uttarakhand PMT Uttarakhand PMT Solved Paper-2005

  • question_answer
    Number of electron emitted by a surface exposed to light is directly proportional to the:

    A)  wavelength of light

    B)  frequency of light

    C)  intensity of light

    D)  velocity of light

    Correct Answer: C

    Solution :

     According the photoelectic effect, the number of photoelectrons emitted from the surface of the photo cathode is directly proportional to the intensity of the incident light. Hence, the number of electrons emitted by a surface exposed to light is directly proportional to the intensity of light.


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