Q. The number of photo-electrons emitted per second from a metal surface increases when
A) The energy of incident photons increases
B) The frequency of incident light increases
C) The wavelength of the incident light increases
D) The intensity of the incident light increases
Explanation
(d) Intensity $\propto$ (No. of photons) $\propto$ (No. of photoelectrons)
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.