Manipal Medical Manipal Medical Solved Paper-2013

  • question_answer
    What is the effect of increasing the intensity of light that falls on the emitter in a photoelectric effect apparatus?

    A)  Cut-off frequency decrease

    B)  Stopping potential decrease

    C) Time delay for emission of photoetectron decrease

    D)  Saturation photocurrent increases

    Correct Answer: D

    Solution :

     Intensity cannot change the cut off frequency or stopping potential. High intensity means more number of photons, so chances of hitting to electron by them increase and hence more photoelectron are emitted i.e., photocurrent increases.


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