To study the energy of photoelectrons we measure
A) the time they take to go a given distance.
B) their temperature.
C) the distance they travel in a given time.
D) the potential difference required to stop them.

Question

Quizplus · Accepted Answer

The energy of photoelectrons is studied by measuring the potential difference required to stop them. This method is based on the photoelectric effect, where the stopping potential gives a direct measure of the maximum kinetic energy of the photoelectrons.

To Study the Energy of Photoelectrons We Measure