The balmer series for the H-atom can be ob-served

Options

A. if we measure the frequencies of light emitted when an excited atom falls to the ground state
B. if we measure the frequencies of light emitted due to transitions between excited states and the first excited state
C. in any transition in a H-atom
D. None of these

Answer

B

Explanation

if we measure the frequencies of light emitted due to transitions between excited states and the first excited state