What transition in the hydrogen spectrum would have thesamewavelength as the Balmer transition n=4 to n=2 of He^(+) spectrum ?

What transition in the hydrogen spectrum would have thesamewavelength

1.	What transition in the hydrogen spectrum would have thesamewavelength as the Balmer transition n=4 to n=2 of He^(+) spectrum ?
Answer» `n=4` to n=1 n=3 to n=2 n=3 to n=1 n=2 to n=1 Answer :D