Question

The ratio of minimum to maximum wavelength in Balmer series is

(1) 5 : 36

(2) 36 : 5

(3) 9 : 5

(4) 5 : 9

Answer 1

Correct option : (4) 5 : 9

Explanation :

Since the series involved is Balmer series, the transition terminates at n = 2

It is clear that λ will have maximum value corresponding to transition from n₂ = 3 to n₁ = 2

For minimum value of λ the transition has to be from ∞ to n₁ = 2