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

  • question_answer
    The minimum wavelength of photon is 5000 Å, its energy will be                                               [RPMT 2004]

    A)            2.5 eV                                      

    B)            50 V

    C)            5.48 eV                                   

    D)            7.48 eV

    Correct Answer: A

    Solution :

               \[E=\frac{12375}{\lambda }=\frac{12375}{5000}=2.47\,eV\,\approx \,2.5\,eV\]


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