The Balmer series for the H-atom can be observed (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) as a sequence of frequencies with the higher frequencies getting closely packed
Correct options are B) and D) When electron jumps from higher energy level to first energy level, the spectrum of light is called Balmer series . Spectrum lines becomes closer if electron jumps from higher energy level to ground level