1.

The transition from the state `n=4` to `n=3` in a hydrogen is ultraviolet radiation. Infrared radiation will be obtained in the transition from:A. `3 rarr 2`B. `4 rarr 2`C. `5 rarr 4`D. `2 rarr 1`

Answer» Correct Answer - C
`5rarr4` Transition energy from `5` to `4` will be lessthan from `4 rarr3`. All other transition energy are higher than that for `4 rarr 3`.


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