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photoelectric current depends on intensity of light used
The photoelectric effect is based on two principles. 1. The intensity or brightness of the visible light (number of photons): The higher the intensity (larger number of photons) determines the number of electrons that are released from the surface material. 2. The frequency of visible light (wavelength): The higher the frequency a beam of light has when it strikes the surface determines the speed (kinetic energy) of the electrons that are ejected from the material. This is independent from light intensity. The higher the frequency of the light, the higher the energy of the electrons emitted, and thus, the higher the current of the circuit.
The particle nature of light is illustrated by the photoelectric effect.
The photo-cell is the most practical example of the photoelectric effect. Light strikes a cathode, which causes an emission of electrons and produces current.
I think X-rays are the reverse process of photoelectric effect.
The current rises as does the intensity of light detected. The more light the greater the intensity, and the greater the current. The answer to the question is that photoelectric current displayed on a graph is shown as a slope that varies with the intensity of light. Someimes it can go up, sometimes it can go down.The ultimate answer is that the photoelectric effect is unreliable, but it is improving!
photoelectric current depends on intensity of light used
The photoelectric current is directly proportional to intensity.It also depends upon frequency, but frequency more than "THRESHOLD FREQUENCY" does not effect the current.The no. of electrons emitted per second by a photo-sensitive surface is directly proportional to the intensity of the incident radiations.So,the photoelectric current depends upon the intensity of the incident radiations.
Switching to a brighter light source. Switch to a light source with a higher intensity.
The more intense the light, the greater the generated current will be. The important thing to understand about the photoelectric effect is that turning up the intensity of the light does not result in the electrons delivering more energy. Rather, a larger number of electrons are given the specific amount of energy that corresponds to the color of the light.
The photoelectric effect is based on two principles. 1. The intensity or brightness of the visible light (number of photons): The higher the intensity (larger number of photons) determines the number of electrons that are released from the surface material. 2. The frequency of visible light (wavelength): The higher the frequency a beam of light has when it strikes the surface determines the speed (kinetic energy) of the electrons that are ejected from the material. This is independent from light intensity. The higher the frequency of the light, the higher the energy of the electrons emitted, and thus, the higher the current of the circuit.
Photoelectric effect
The particle nature of light is illustrated by the photoelectric effect.
- select the adequate material for this experiment - switch to a light source with a shorter wavelength - switch to a light source with a higher intensity
conditions of photoelectric effect
The photo-cell is the most practical example of the photoelectric effect. Light strikes a cathode, which causes an emission of electrons and produces current.
Photo electrons. So current due to these photo electrons is named as photo electric current.