Which change will not change the kinetic energy of the most energetic electrons emitted in the photoelectric effect?
A)changing the brightness of the light
B)changing the frequency of the light
C)changing the metal the light is hitting
D)All of the above will change the electron's kinetic energy.

Question

Quizplus · Accepted Answer

The kinetic energy of the most energetic electrons in the photoelectric effect is determined by the frequency of the incident light and the work function of the metal, not by the brightness of the light. Changing the brightness only affects the number of electrons emitted, not their kinetic energy.

Which Change Will Not Change the Kinetic Energy of the Most