The ratio of the wavelength of first line of Balmer series to the first line of Lyman series is

Step-by-step solution

1 =R ( 1 n₁^2 - 1 n₂^2 ) For Lyman series n=1 For Balmer series n=2 1 _L =R ( 1 1^2 ), 1 _B =R ( 1 1^2 - 1 2^2 ) _B _L = 3 1