Why is photoelectric current proportional to intensity?
It’s because intensity is directlyproportional to number of photon in light ray and in photoelectric effect one photon can only release one electron and so more intense light means more photon hence more elections will ejected from the metal surface and hence increasing the photo current .
Is photoelectric current directly proportional to intensity?
When a suitable radiation is used, the photoelectric current is directly proportional to intensity of radiation and increases with the increase in accelerating potential till the stage is reached when photo-current becomes maximum and does not increase with further increase in accelerating potential.
Does photoelectric current depends on light intensity?
Yes, the photoelectric current depends on the intensity of incident radiation. The intensity of incident radiation basically indicates the number of photons falling at a time on the metal surface.
What happens when you increase the intensity of light?
Increasing the light intensity (photon energy per second per unit area) increases the rate at which electrons leave the metal, and the electrons have more kinetic energy. Changing the frequency of the light while keeping the intensity constant should not change the rate of electron emission.
How photoelectric current depends on intensity of incident radiation?
The strength of the photoelectric current depends upon the intensity of the incident radiation. An increase in the intensity of the radiation means more photons are incident, so more electrons will be ejected i.e. photoelectric current will be increased.
How does the photoelectric current vary with intensity of incident radiation?
(a) Photoelectric current in a photocell increases with the increase in the intensity of the incident radiation.
Does light intensity affect photoelectric current?
the number of electrons (i.e. the electric current) is proportional to the light intensity (at a fixed wavelength) and independent of the frequency of the incident radiation above the threshold value of ν0 (no current is observed below ν0).
What is the effect of intensity of light on photoelectric current?
At a particular negative potential the value of photoelectric current becomes zero . This is known as stopping potential . (3) Stopping potential does not the intensity of incident light . On increasing intensity , the value of saturated current increases , whereas the stopping potential remains unchanged .
How does intensity of a radiation affect the kinetic energy of photons during photoelectric effect?
If the intensity of the incident radiation is increased, there is no effect on the kinetic energies of the photoelectrons. The kinetic energy depends only on the frequency on the light, and hence the energy provided by each photon. This suggests that the photoelectric effect involves one electron and only one photon.
What happens to the photo electric current If wavelength of incident light is increased?
For photoelectric effect to occur, the energy of the photon must be greater than the work function. As the wavelength of the incident light decreases but is lower than the cut-off wavelength, the maximum kinetic energy of the photo electrons increases.
Why the photoelectric current increases with increase in the intensity of incident light?
Explanation: When the intensity of light is increased then it means that the number of photons incident on the metal surface increases which leads to greater production of photoelectrons which means that the photo current is increasing due to increase in intensity of incident radiation.
How is photoelectric current affected on increasing?
We see in photoelectric effect by increasing frequency the K.E of photoelectrons increases. If velocity of electrons increases then time will be less then current should increase then why current remains constant.?
Why does the photoelectric effect depend on intensity of light?
It’s because intensity is directly proportional to number of photon in light ray and in photoelectric effect one photon can only release one electron and so more intense light means more photon hence more elections will ejected from the metal surface and hence increasing the photo current . I hope this will help. Correct question.
What is the relationship between threshold frequency and photoelectric current?
The threshold frequency varies with material, it is different for different materials. The photoelectric current is directly proportional to the light intensity. The kinetic energy of the photoelectrons is directly proportional to the light frequency.
How does the frequency of the incident photon affect the photoelectron?
If the frequency of the photon is exactly equal to the threshold frequency (𝜈 = 𝜈 th), there will be an emission of photoelectrons, but their kinetic energy will be equal to zero. An illustration detailing the effect of the frequency of the incident light on the kinetic energy of the photoelectron is provided below.
How does the intensity of radiation depend on the number of photons?
Now since a single photon interacts with a single electron causing the emission of the electron, a higher number of incident photons implies that a greater number of photoelectrons are emitted in unit time. Consequently, the current increases with the number of photons incident and hence with the intensity of radiation used.