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KVPY Sample Paper KVPY Stream-SX Model Paper-31

  • question_answer
    The maximum kinetic energy of photoelectrons emitted from a surface when photons of energy \[6eV\] fall on it is \[4eV\]. The stopping potential in volts is:

    A) 2

    B) 4                        

    C) 6

    D) 10

    Correct Answer: B

    Solution :

    Stopping potential is the negative potential applied to stop the electrons having maximum kinetic energy. Thereore, stopping potential will be 4V.


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