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P-Jay1
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Why does the stopping potential not depend on the intensity of incident light?
P-Jay1 said:Why does the stopping potential not depend on the intensity of incident light?
ZapperZ said:Look at the Einstein photoelectric effect equation that describes light's energy with respect to the work function of the material. Try to make the connection between that equation, and your question.
Zz.
P-Jay1 said:I did and I can't!
Meir Achuz said:The stopping potential depends on the material, and has no relation to the incoming light.
The stopping potential refers to the minimum potential difference needed to stop the flow of electrons in a photoelectric effect experiment. This value is determined by the energy of the incident photons, not the intensity or number of photons. As long as the photons have enough energy to overcome the work function of the material, the stopping potential will not vary.
The intensity of light does not directly affect the kinetic energy of emitted electrons. It only determines the number of photons that reach the material's surface, which in turn affects the number of electrons that are ejected. The kinetic energy of the emitted electrons is determined by the energy of the incident photons and the work function of the material.
No, the stopping potential cannot be increased by increasing the intensity of incident light. As mentioned before, the stopping potential is determined by the energy of the incident photons, not their intensity. Even if the intensity is increased, the energy of the photons remains the same and thus the stopping potential will not change.
The intensity of light directly affects the number of emitted electrons. As the intensity increases, more photons reach the material's surface, resulting in a higher number of electrons being ejected. However, the kinetic energy of these electrons will not be affected by the intensity of light.
The stopping potential is determined by the energy of the incident photons and the work function of the material. The work function is the minimum amount of energy required to remove an electron from the surface of the material. If the energy of the photons is greater than the work function, the remaining energy is converted into the kinetic energy of the emitted electrons.