Silver has a work function of 4.73 eV. Photons of threshold frequency would be described as which of the following?
A) infrared
B) red
C) yellow
D) blue
E) ultraviolet

Question

Quizplus · Accepted Answer

The threshold frequency is the minimum frequency of a photon required to eject an electron from a metal surface. The work function of silver is 4.73 eV, which corresponds to a threshold frequency in the ultraviolet region of the electromagnetic spectrum. Therefore, photons of threshold frequency would be described as ultraviolet.

Silver Has a Work Function of 4