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

  • question_answer
    If threshold wavelength for sodium is 6800Å then the work function will be         [RPET 2001]

    A)            \[1.8eV\]                               

    B)            \[2.5eV\]

    C)            \[2.1eV\]                               

    D)            \[1.4eV\]

    Correct Answer: A

    Solution :

               \[{{W}_{0}}=\frac{12375}{6800}=1.8eV\]


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