Taking the work function into account, electrons ejected from a photosensitive material have
A)less kinetic energy than the absorbed photon's energy.
B)more kinetic energy than the absorbed photon's energy.
C)kinetic energy equal to the absorbed photon's energy.

Question

Quizplus · Accepted Answer

The kinetic energy of ejected electrons is less than the absorbed photon's energy because the work function (the minimum energy needed to remove an electron from the surface of the material) consumes part of the photon's energy.

Taking the Work Function into Account, Electrons Ejected from a Photosensitive