Which listed graph(s) correctly show photoelectric current as a function of intensity or frequency of incident light, in the source’s graph set? Image
Options

Question

Which listed graph(s) correctly show photoelectric current as a function of intensity or frequency of incident light, in the source’s graph set? Image

G1 Physics · Accepted Answer

Step 1: At fixed light frequency above threshold and fixed collecting potential, more incident intensity means more photons per second, hence more photoelectrons per second. Step 2: Thus photoelectric current increases approximately linearly with intensity, which is the straight line through origin in graph A. Step 3: Increasing light frequency above threshold primarily changes maximum kinetic energy and stopping potential; the current is not simply proportional to frequency as drawn in graphs…