EAMCET Medical EAMCET Medical Solved Paper-1996

  • question_answer
    The number of electrons emitted by a surface exposed to light is directly proportional to:

    A)  wavelength of light       

    B)  intensity of light

    C)  velocity of light               

    D)  frequency of light

    Correct Answer: B

    Solution :

     According to the laws of Einsteins photo electric effect the number of photon emitted from the metal surface of the cathode is  directly proportional to the intensity of incident light. As we increase of intensity of incident light the photo electric current increases, hence, no. of photons also increases.


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