How is the photoelectric current affected on increasing the frequency and intensity of incident radiation and why?
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When light falls on the surface of metal, it causes the emission of electrons from the metal surface.
When the intensity of light is increased, it causes a large number of electrons to be ejected from the surface of metal. since photoelectric current is directly proportional to the number of photoelectrons emitted per second.
But the energy of electrons remain the same because brighter light causes an increase in current but does not cause the individual electrons to gain higher energies.
the maximum K.E of electrons is independent of the intensity of the light.
If the intensity of light is low, less number of electrons will be ejected but the k.e has not any effect.
When the intensity of light is increased, it causes a large number of electrons to be ejected from the surface of metal. since photoelectric current is directly proportional to the number of photoelectrons emitted per second.
But the energy of electrons remain the same because brighter light causes an increase in current but does not cause the individual electrons to gain higher energies.
the maximum K.E of electrons is independent of the intensity of the light.
If the intensity of light is low, less number of electrons will be ejected but the k.e has not any effect.
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