question_answer

In an experiment on photoelectric effect photons of wavelength 300 nm eject electrons from a metal of work function 2.25eV. A photon of energy equal to that of the most energetic electron corresponds to the following transition in the hydrogen atom:

A)  n=2 to n=1 state.

B)  n=3 to n=1 state.

C)  n=3 to n=2 state.

D)  n=4 to n=3 state.