Question: The transistion from the state $\mathrm{n}=4$ to $\mathrm{n}=3$ in a hydrogen like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition from :-
$4 \rightarrow 2$
$5 \rightarrow 4$
$2 \rightarrow 1$
$3 \rightarrow 2$
Correct Option: , 2
Solution:
