Chemistry

Problem

\lambda_1

and

\lambda_2

are the wavelengths of the third member of Lyman and first member of the Paschen series respectively, then the value of

\lambda_1 : \lambda_2

is [Feb. 26, 2021 (I)] (a) 1:3 (b) 7:108 (c) 7:135 (d) 1:9