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NEET Sample Paper NEET Sample Test Paper-56

  • question_answer
    de-broglie wavelength of an electron and the wavelength of a photon are the same. The ratio between the energy of that photon and the momentum of that electron is:

    A) h                     

    B) c     

    C) \[\frac{1}{h}\]                          

    D) \[\frac{1}{c}\]

    Correct Answer: B

    Solution :

    [b] \[{{\lambda }_{e}}=\frac{h}{(mv)}=\frac{h}{{{p}_{e}}}and\,{{\lambda }_{p}}=\frac{hc}{{{E}_{p}}}\] \[{{\lambda }_{e}}={{\lambda }_{p}}\frac{h}{{{p}_{e}}}=\frac{hc}{{{E}_{p}}}(given)\] \[({{p}_{e}}=Mv)\frac{{{E}_{p}}}{{{P}_{e}}}=c\]


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