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The ratio of wavelength of photon corres...

The ratio of wavelength of photon corresponding to the `alpha`-line of Lyman series in H-atom and `beta`- line of Balmer series in `He^(+)` is :

A

`1:1`

B

`1:2`

C

`1:4`

D

`3 : 16`

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The correct Answer is:
A
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