The strength of the photoelectric current depends upon

Options

A. the intensity of the source of light is decreased
B. the frequency of incident radiation decreases below threshold frequency.
C. the exposure time decreases
D. none of these

Answer

A

Explanation

When the intensity of the incident radiation in increased, the number of photoelectrons emitted does increase. Thus, the rate of flow of electrons increases and hence the photoelectronic current decreases with the decrease in intensitve of the source of light.