Q. When yellow light is incident on a surface, no electrons are emitted while green light can emit. If red light is incident on the surface, then
A) No electrons are emitted
B) Photons are emitted
C) Electrons of higher energy are emitted
D) Electrons of lower energy are emitted
Explanation
(a) $\lambda_{r} > \lambda_{y} > \lambda_{g}.$ Here threshold wavelength $< \lambda_{y}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.