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

  • question_answer
    In an X-ray tube electrons bombarding the target produce X-rays of minimum wavelength 1 Å. What must be the energy of bombarding electrons                                 [KCET 2001]

    A)            13375 eV                                

    B)            12375 eV

    C)            14375 eV                                

    D)            15375 eV

    Correct Answer: B

    Solution :

               \[E(eV)=\frac{hc}{e\lambda }=\frac{6.6\times {{10}^{-34}}\times 3\times {{10}^{8}}}{1.6\times {{10}^{-19}}\times 1\times {{10}^{-10}}}=12375\,eV\]


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