Q. Among the following four spectral regions, the photons has the highest energy in
A) Infrared
B) Violet
C) Red
D) Blue
Explanation
(b) Energy of a photon, $E = \frac{hc}{\lambda}$
$\lambda_{infrared} > \lambda_{red} > \lambda_{Blue} > \lambda_{Violet}$
Therefore, violet has the highest energy
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.