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JEE Main & Advanced Physics Atomic Physics Question Bank Atomic Structure

  • question_answer
    An electron changes its position from orbit \[n=4\] to the orbit \[n=2\] of an atom. The wavelength of the emitted radiation?s is (R = Rydberg?s constant)                    [BHU 2004]

    A)            \[\frac{16}{R}\]                   

    B)            \[\frac{16}{3R}\]

    C)            \[\frac{16}{5R}\]

    D)            \[\frac{16}{7R}\]

    Correct Answer: B

    Solution :

               \[\frac{1}{\lambda }=R\left[ \frac{1}{n_{1}^{2}}-\frac{1}{n_{2}^{2}} \right]=R\left[ \frac{1}{{{(2)}^{2}}}-\frac{1}{{{(4)}^{2}}} \right]\] Þ \[\lambda =\frac{16}{3R}\]


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