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NEET Sample Paper NEET Sample Test Paper-4

  • question_answer
    In photoelectric experiment, the wavelength of incident radiation is reduced from \[6000\overset{o}{\mathop{A}}\,\] to \[4000\overset{o}{\mathop{A}}\,,\]then:

    A)  Stopping potential will decrease

    B)  Stopping potential will increase

    C)  Kinetic energy of emitted electrons will decrease

    D)  The value of work function will decrease

    Correct Answer: B

    Solution :

    Stopping potential  \[{{V}_{o}}=\frac{hc}{e}\left[ \frac{1}{\lambda }-\frac{1}{{{\lambda }_{o}}} \right]\] As \[\lambda \] decreases. So \[{{V}_{o}}\] increases


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