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

  • question_answer
    If the energy of the photon is increased by a factor of 4, then its momentum                                      [UPSEAT 2004]

    A)            Does not change

    B)            Decreases by a factor of 4

    C)            Increases by a factor of 4

    D)            Decreases by a factor of 2

    Correct Answer: C

    Solution :

               \[P=\frac{h}{\lambda },\ E=\frac{hc}{\lambda }\]Þ \[E=Pc.\]


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