Q. The time taken by a photoelectron to come out after the photon strikes is approximately
A) $10^{- 4}s$
B) $10^{- 10}\ s$
C) $10^{- 16}s$
D) $10^{- 1}s$
Explanation
(b) The photoelectric effect is an instantaneous phenomenon (experimentally proved). It takes approx time of the order of $10^{- 10}$s.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.