Q. A metal surface is illuminated by a light of given intensity and frequency to cause photoemission. If the intensity of illumination is reduced to one-fourth of its original value, then the maximum kinetic energy of the emitted photoelectrons would become
A) Four times the original value
B) Twice the original value
C) 1/6th of the original value
D) unchanged
Explanation
(d) The maximum KE of the emitted photoelectrons is independent of the intensity of the incident light but depends upon the frequency of the incident light
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.