What is the kinetic energy of the electron equal to if it is ejected from a metal with a work function equal to the energy of an incoming photon?
A)zero
B)the work function
C)the incident photon energy
D)the nature of the material

Question

Quizplus · Accepted Answer

The kinetic energy of the electron is zero if it is ejected from a metal with a work function equal to the energy of an incoming photon, because all the energy from the photon is used to overcome the work function, leaving no excess energy for the kinetic energy of the electron.

What Is the Kinetic Energy of the Electron Equal to If