The work functions for three metals X,Y.and Z are 4,5,and 6 eV,respectively.Photoelectrons are created when UV light shines on these metals.The photoelectrons from which metal would have the largest stopping voltage?
A)Z
B)Y
C)X

Question

Quizplus · Accepted Answer

The stopping voltage is related to the kinetic energy of the photoelectrons, which is highest for the metal with the lowest work function. Metal X has the lowest work function (4 eV), so it will have the largest stopping voltage.

The Work Functions for Three Metals X,Y