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

  • question_answer
    The minimum wavelength of the X-rays produced by electrons accelerated through a potential difference of V volts is directly proportional to                   [CBSE PMT 1996]

    A)            \[\sqrt{V}\]                          

    B)            \[{{V}^{2}}\]

    C)            \[1/\sqrt{V}\]                      

    D)            \[1/V\]

    Correct Answer: D

    Solution :

               \[h{{\nu }_{\max }}=eV\] \[\Rightarrow \,\frac{hc}{{{\lambda }_{\min }}}=eV\] \[\therefore \,\,{{\lambda }_{\min }}\propto \frac{1}{V}\]


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