Q.

The number of spectral lines obtained when electron jumps from 4th excited state to ground state in sample of H-atoms is

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a

4

b

6

c

10

d

3

answer is C.

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Detailed Solution

No. of spectral lines =Σ(5−1)=4+3+2+1=10
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The number of spectral lines obtained when electron jumps from 4th excited state to ground state in sample of H-atoms is