Ratio of longest wavelengths corresponding to Lyman and Balmer series in hydrogen spectrum is

Options

A. `(7)/(29)`
B. `(9)/(31)`
C. `(5)/(27)`
D. `(3)/(23)`

Answer

C

Explanation

`(1)/(lambda= R [(1)/(1^2)-(1)/(n^2)]`, for lymen series, and
`(1)/(lambda)= R [(1)/(2^2)-(1)/(n^2)]` for Balmer series .