Q. When ultraviolet rays are incident on metal plate, then photoelectric effect does not occur. It occurs by the incidence of
A) $X$-rays
B) Radio wave
C) Infrared rays
D) Green house effect
Explanation
(a) $\lambda_{X - ray} < \lambda_{UV - ray}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.