Two photons are emitted as an electron de-excites from the third quantum level to the second,and then to the ground state.The sum of the frequencies of the two photons equals the frequency of the single photon that would be emitted if the de-excitation were from the third to the ground state directly.This is according to
A)energy conservation.
B)the physicist W.Ritz.
C)both of these
D)neither of these

Question

Quizplus · Accepted Answer

This statement is a result of both energy conservation and the physicist W.Ritz's empirical formula for spectral lines, which states that the frequency of a spectral line is equal to the difference between the frequencies of the initial and final energy states involved in the transition.

Two Photons Are Emitted as an Electron De-Excites from the Third