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JEE Main & Advanced Sample Paper JEE Main Sample Paper-6

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

    A)  Cut-off frequency decreases

    B)  Stopping potential decreases

    C)  Time delay for emission of photoelectron decreases

    D)  Saturation photocurrent increases

    Correct Answer: D

    Solution :

    Intensity cannot change cut-off frequency or stopping potential. High intensity means more number of photons, so chances of hitting to electron by them increases and hence more photoelectrons are emitted ie, photocurrent increases.


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