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

Options

A. `1:1`
B. `1:2`
C. `1:4`
D. `3:16`

Answer

A

Explanation

`(lambda_(alpha))/(lambda_(beta))`=`(R.1^(2)((1)/1^(2)-(1)/(2^(2))))/(R.2^(2)((1)/(2^(2))-(1)/(4^(2))))=1`