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Punjab Medical Punjab - MET Solved Paper-2001

  • question_answer
    In an hydrogen atom, the electron revolves around the nucleus in an orbit of radius\[0.53\times {{10}^{-10}}\,\,m\]. Then the electrical potential produced by nucleus at the position of the elect is

    A) \[-13.6\,\,V\]                    

    B) \[-27.2\,\,V\]

    C) \[27.2\,\,V\]                      

    D) \[13.6\,\,V\]

    Correct Answer: C

    Solution :

    Using the formula                 \[V=\frac{1}{4\pi {{\varepsilon }_{0}}}=\frac{Ze}{r}\] (for hydrogen nuclear\[Z=1\]                 \[e=1.6\times {{10}^{-19}}C\]                 \[r=0.53\times {{10}^{-10}}m)\]                    \[=\frac{9\times {{10}^{9}}\times 1.6\times {{10}^{-19}}\times 1}{0.53\times {{10}^{-10}}}=27.2\,\,V\]


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