AMU Medical AMU Solved Paper-2007

  • question_answer
    If the wavelength of incident radiation in a photoelectric experiment is decreased, then the

    A)  photoelectric current will decrease

    B)  photoelectric current will increase

    C)  stopping potential will decrease

    D)  stopping potential will increase

    Correct Answer: D

    Solution :

                     Decreasing the \[\lambda \] of incident photon means energy of incident light is increased, so \[K{{E}_{k}}\]increases and hence stopping potential increases.


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