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

  • question_answer
    The maximum kinetic energy of photoelectrons emitted from a surface when photons of energy 6 eV fall on it is 4 eV. The stopping potential in volts is [IIT JEE 1997 Re-Exam]

    A)            2    

    B)            4

    C)            6    

    D)            10

    Correct Answer: B

    Solution :

               \[{{K}_{\max }}=\left( \,|{{V}_{s}}|\, \right)\,eV\] \[\Rightarrow \,|{{V}_{s}}|\,=\,4V\]


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