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JEE Main & Advanced Physics Atomic Physics Question Bank Self Evaluation Test - Atoms

  • question_answer
    Electrons are bombarded to excite hydrogen atoms and six spectral lines are observed. If \[{{E}_{g}}\] is the ground state energy of hydrogen, the minimum energy the bombarding electrons should posses is   

    A)  \[\frac{8{{E}_{g}}}{9}\]

    B)  \[\frac{15{{E}_{g}}}{16}\]

    C)  \[\frac{35{{E}_{g}}}{36}\]

    D)  \[\frac{48{{E}_{g}}}{49}\]

    Correct Answer: B

    Solution :

    [b] To obtain 6 spectral line, as electron must be excited to fourth orbit with energy \[\frac{{{E}_{g}}}{16},\] so that the difference is \[\frac{15{{E}_{g}}}{16},\]


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