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The number of spectral lines obtained in...

The number of spectral lines obtained in Bohr spectrum of hydrogen atom when an electron is excited from `5^("th")` orbit to ground level is:

A

10

B

5

C

8

D

15

Text Solution

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The correct Answer is:
A
Number of spectral lines `=(n(n-1))/(2)=(5(5-1))/(2)=10` {n = number of levels available for transition}.
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