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.
The correct answers are the options (b, d) is the correct option as,
To observe the Balmer series for H-atom, simply by measuring the frequencies of light that are emitted because of consequences such as the transition between higher excited states and the first excited state and as a sequence of frequencies with the higher frequencies getting closely packed.