In a H-like sample electrons make transition from 4th excited state to 2 nd state then....

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In a H-like sample electrons make transition from 4th excited state to 2 nd state then
\( \mathrm{P} \)
(1) 10 different spectral lines are observed
W.
(2) 6 different spectral lines are observed
(3) Number of lines belonging to the Balmer series is 3 .
(4) Number of lines belonging to the Paschen series is 2 .


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