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NEET Sample Paper NEET Sample Test Paper-42

  • question_answer
    According to Bohr's theory, the angular momentum of an electron in 5th orbit is:

    A) \[\frac{2.5\operatorname{h}}{\pi }\]                   

    B) \[\frac{25\operatorname{h}}{\pi }\]

    C) \[\frac{1.0\operatorname{h}}{\pi }\]                   

    D) \[\frac{10\operatorname{h}}{\pi }\]

    Correct Answer: A

    Solution :

    According to Bohr's theory angular \[\operatorname{momentum}, mvr =\frac{nh}{2\pi }\] \[\therefore n = 5 given\] \[\operatorname{mvr} =\frac{5h}{2\pi }\] \[\operatorname{mvr} =2.5\left( \frac{h}{\pi } \right)\]


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