A Surface Is Illuminated by Light and Emits Photoelectrons

Multiple Choice

A surface is illuminated by light and emits photoelectrons. The intercept (value corresponding to the place where the curve intersects the y axis) of the graph of the maximum kinetic energy of the ejected photoelectrons as a function of the frequency of the incident light is

A) the photoelectric current.
B) the work function.
C) the stopping potential.
D) the cutoff frequency.
E) Plank's constant.