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If the shortest wavelength in Lyman seri...

If the shortest wavelength in Lyman series of hydrogen atom is A, then the longest wavelength in Paschen series of `He^(+)` is :

A

`(5lambda_(1))/(9)`

B

`(27lambda_(1))/(5)`

C

`(36lambda_(1))/(5)`

D

`(9lambda_(1))/(5)`

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