Electrons are bombarded to excite hydrogen atoms and six spectral lines are observed. If Eg is the ground state energy of hydrogen, the minimum energy the bombarding electrons should possess is
A
8Eg9
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B
15Eg16
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C
35Eg36
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D
48Eg49
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Solution
The correct option is B15Eg16 To obtain 6 spectral line, as electron must be excited to fourth orbit with energy Eg16, so that the difference is 15Eg16.