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NEET Sample Paper NEET Sample Test Paper-72

  • question_answer
    The frequency of one of the lines in Paschen series of hydrogen atom is \[2.340 \times  1{{0}^{11}}\,Hz\]. The quantum number \[{{n}_{2}}\] which produces this transition is

    A) 6                                 

    B) 5

    C) 4                                 

    D) 3

    Correct Answer: D

    Solution :

    \[\overline{\nu }=\frac{1}{\lambda }={{R}_{H}}\left[ \frac{1}{n_{1}^{2}}-\frac{1}{n_{2}^{2}} \right]\] \[=\,\,\frac{1}{\lambda }={{R}_{H}}\left[ \frac{1}{3_{{}}^{2}}-\frac{1}{n_{2}^{2}} \right]={{n}_{2}}=3\] for Paschen series.


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