Manipal Medical Manipal Medical Solved Paper-2003

  • question_answer An X-ray photon has a wavelength\[0.01\overset{o}{\mathop{\text{A}}}\,\]. Its momentum (in\[kg\text{ }m{{s}^{-1}}\]) is:

    A)  \[6.66\times {{10}^{-22}}\]     

    B)  \[3.3\times {{10}^{-32}}\]

    C)  \[6.6\times {{10}^{-22}}\]      

    D)  0

    Correct Answer: C

    Solution :

     From the relation of momentum and wave length \[p=\frac{h}{\lambda }\] (Here:\[\lambda =0.01\overset{o}{\mathop{\text{A}}}\,,h=6.6\times {{10}^{-34}}Js\]) \[p=\frac{6.6\times {{10}^{-34}}}{0.01\times {{10}^{-10}}}=6.6\times {{10}^{-22}}kgm/s\]

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