Solve this:
Q.17. A photon in X region is more energetic than in the visible region; X is
(a) IR
(b) UV
(c) Microwave
(d) Radio wave
 

Dear student,
The spectrum of electromagnetic radiations in energy order is,

Cosmic Rays> Gamma Rays> X-Rays> Ultraviolet Rays(UV)> Visible region> Infrared Radiation(IR)> Micro waves> Radio waves> Long Radio waves.

Hence UV has more energy than visible region, IR region and Radio waves. Hence answer is B.

Hope it helps,
Regards