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  3. JEE Main & Advanced

JEE Main & Advanced Sample Paper JEE Main - Mock Test - 13

  • question_answer
    The anode voltage of a photocell is kept fixed. The wavelength \[\lambda \] of the light falling on the cathode is gradually changed. The plate current I of the photocell varies as follows

    A)

    B)

    C)

    D)

    Correct Answer: D

    Solution :

    As \[\lambda \] is increased, there will be a value of K above which photoelectrons will be cease to come out so photocurrent will become zero. Hence (d) is correct answer.


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