Table of Contents
What is the effect of potential on photocurrent?
A higher intensity of radiation produces a higher value of photocurrent. For the negative potential difference, as the absolute value of the potential difference increases, the value of the photocurrent decreases and becomes zero at the stopping potential.
Why does photocurrent become saturated?
When the voltage is increased up to a certain level, every electron that gets released is able to reach the other electrode, but as the number of electrons getting released is constant, current too becomes constant (saturation current) and no further increase in voltage will cause increase in current.
What is photoelectric effect discuss the effect of frequency intensity and potential on photocurrent?
At a particular fixed frequency of incident radiation the rate of the emission of photo electrons i.e. the photocurrent increases with increase in the intensity of the incident light. Photo electric effect does not occur at frequency less than threshold frequency.
Does photocurrent depend on frequency?
does not depend on the frequency of incident light but depends on the intensity of the incident light.
What is saturation photocurrent?
The frequency and intensity of the incident light are kept constant. The positive voltage given to the anode is gradually increased and the corresponding value of the photocurrent is recorded. The maximum value of the photoelectric current is called the saturation current.
How is photocurrent related to intensity?
Photocurrent is directly proportional to intensity for a fixed frequency of the incident light. The reason for this is that the intensity of light is a measure of the power per unit area that the light beam delivers to the photodevice.
Does photocurrent depends on the energy of incident photons?
Current is not dependent on the frequency of photons. Frequency of photons is only related to the kinetic energy. Thus the current remains the same.
When stopping potential is applied to a photoelectric experiment no photocurrent is observed because the emission of photoelectrons is stopped?
When stopping potential is applied in an experiment on photoelectric effect, no photocurrent is observed. This means that. The photoelectrons are dispersed from the sides of the apparatus.