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AMU Medical AMU Solved Paper-2010

  • question_answer
    When the electron of a hydrogen atom jumps from n = 4 to n = 1 state, the number of spectral lines emitted is

    A)  15                                         

    B)  9

    C)  6                                            

    D)  3

    Correct Answer: C

    Solution :

                     When an electron jumps from n to ground state (ie, n = 1), the number of spectral lines \[=\frac{n(n-1)}{2}\] \[\therefore \] When an electron jumps from n = 4 level number of spectral lines \[=\frac{4(4-1)}{2}\]                 \[=\frac{4\times 3}{2}=6\]


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