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The balmer series for the H-atom can be ...

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

A

if we measure the frequency of light emitted when an excited atom falls to the ground state.

B

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

C

in any trasition in a H-atom

D

as a sequence of frequencies with the higher frequencies getting closely packed.

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The correct Answer is:
B, D
The balmer series for H-atom can be obserbed when `n_(f)=2` and `n_(i)=3,4,5` etc are higher excited state.
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