If `lamda_(1) and lamda_(2)` are the wavelengths of the first members of the Lyman and Paschen series respectively, then `lamda_(1):lamda_(2)` is

Options

A. `27//32`
B. `32//27`
C. 4//9`
D. `9//4`

Answer

A

Explanation

`(1)/( lamda_(3-1))=R ((I )/(I^2 ) - (1)/(3^2)) =* 8R )/(9)`
`(1 )/( lamda_(2-1) ) = R ((I )/( I^2) - (1)/( 2^2))=(3R )/(4 ) implies (3R)/( 4 ) implies (lamda_(3-1))/(lamda _(2-1))=(27 )/( 32)`