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 Form 4 Physics Photoelectric effect online video lessons

Factors affecting the photoelectric effect

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Answer Text:
Factors affecting the
photoelectric effect
1. Intensity of the incident radiation– the rate of emission of photoelectrons is directly proportional to the intensity of incident radiation.
2. Work function of the surface– photoelectrons are emitted at differentvelocities with the maximum being processed by the ones at the
surface.
3. Frequency of the incident radiation– the cut-off potential for each surface is directly proportional to the frequency of the incident radiation.


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