JEE Main & Advanced Physics Atomic Physics Question Bank Atomic Structure

  • question_answer
    According to Bohr's theory the moment of momentum of an electron revolving in second orbit of hydrogen atom will be  [MP PET 1999; KCET 2003]

    A)            \[2\pi h\]                               

    B)            \[\pi h\]

    C)            \[\frac{h}{\pi }\]                 

    D)            \[\frac{2h}{\pi }\]

    Correct Answer: C

    Solution :

                       Angular momentum \[L=n\left( \frac{h}{2\pi } \right)\]            For this case n=2, hence \[L=2\times \frac{h}{2\pi }=\frac{h}{\pi }\]


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