According to Einstein,as the wavelength of the incident monochromatic light beam becomes shorter,the work function of a target material in a phototube:
A)increases.
B)decreases.
C)remains constant.
D)is directly proportional to wavelength.

Question

Quizplus · Accepted Answer

The work function of a target material in a phototube is a characteristic of the material itself and does not change with the wavelength of the incident light. It is the minimum energy needed to remove an electron from the surface of the material.

According to Einstein,as the Wavelength of the Incident Monochromatic Light