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

  • question_answer
    If the minimum wavelength obtained in an X-ray tube is \[2.5\times {{10}^{-10}}m\], the operating potential of the tube will be                                                                                              [RPMT 2003]

    A)            2 kV                                         

    B)            3 kV

    C)            4 kV                                         

    D)            5 kV

    Correct Answer: D

    Solution :

               \[{{\lambda }_{\min }}=\frac{12375}{V}{\AA}\]\[\Rightarrow V=\frac{12375}{2.5}\]= 4950 V ≃ 5 kV.


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