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JEE Main & Advanced Physics Photo Electric Effect, X- Rays & Matter Waves Question Bank Photon and Photoelectric Effect

  • question_answer
    The photoelectric threshold wavelength for a metal surface is 6600 Å. The work function for this is           [MP PET 1991]

    A)            1.87 V                                      

    B)            1.87 eV

    C)            18.7 eV                                   

    D)            0.18 eV

    Correct Answer: B

    Solution :

               \[{{W}_{0}}=\frac{12375}{6600}=1.87\,eV.\]


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