Question

A photocell employs photoelectric effect to convert 

(a) change in the frequency of light into a change in the electric current 

(b) change in the frequency of light into a change in electric voltage 

(c) change in the intensity of illumination into a change in photoelectric current 

(d) change in the intensity of illumination into a change in the work function of the photocathode.

Answer 1

The correct option is (c) change in the intensity of illumination into a change in photoelectric current.

Explanation:

The photoelectric current is directly proportional to the intensity of illumination. Therefore a change in the intensity of the incident radiation will change the photocurrent also.