Question

Hydrogen atom from excited state comes to the ground by emitting a photon of wavelength 2. The value of principal quantum number 'n' of the excited state will be:

(R: Rydberg constant)

(A) \(\sqrt{\frac{\lambda R}{\lambda - 1}}\)

(B) \(\sqrt{\frac{\lambda R}{\lambda R - 1}}\)

(C) \(\sqrt{\frac{\lambda }{\lambda R- 1}}\)

(D) \(\sqrt{\frac{\lambda R^2}{\lambda R - 1}}\)

Answer 1

Correct option is (B) \(\sqrt{\frac{\lambda R}{\lambda R - 1}}\)