Question

In Bohr series of lines of hydrogen spectrum, the emission of a line from the red end corresponds to which one of the following inner-orbit jump of the electron in a hydrogen atom?

• A.
• B.
• C.
• D.

Answer 1

Answer: (A), (B)

The correct options are
A
B

In H-spectrum coloured radiation means visible region (Balmer series) $(n_{final}=2)$. This is the only criteria. Doesn't matter where the electron starts from. Also, since coloured light is emitted, the final n value should be lower than the initial value.