Photoelectric Effect Intensity Dependence · CAP 2011 #12
Physics · quantum-mechanics
Problem
A clean metal surface is placed in a vacuum. The surface is irradiated with monochromatic light of variable intensity I (number of photons per unit area) and frequency f. We measure the maximum kinetic energy K of electrons emitted from the metal due to the photoelectric effect. How does K behave when I increases?
a) K increases.
b) K is constant.
c) K decreases.
d) Impossible to determine.