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CET Karnataka Medical CET - Karnataka Medical Solved Paper-2001

  • question_answer
    In an X-ray tube electrons bombarding the target produce X-rays of minimum wavelength 1 A. What must be the energy of bombarding electrons:

    A)  13375 eV

    B)  12375 eV

    C)  14375 eV

    D)  15375 eV

    Correct Answer: B

    Solution :

     Energy of bombarding electron \[E=\frac{hc}{\lambda }\] \[=\frac{6.6\times {{10}^{-34}}\times 3\times {{10}^{8}}}{1\times {{10}^{-10}}}\] \[=19.8\times {{10}^{-16}}\]Joule \[19.8\times {{10}^{-16}}\] \[=\frac{19.8\times {{10}^{-16}}}{1.6\times {{10}^{-19}}}eV=12375eV\]


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