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State the laws of photo emission....

State the laws of photo emission.

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(i) The number of photo electrons emitted in a photoelectric process is directly proportional to the intensity the of incident radiation.
(ii) The maximum kinetic energy of the emitted photo electrons in a photoelectric process is directly proportional to the frequency of the incident radiation.
There exists a minimum frequency called threshold frequency below which PEE does not take place in a material.
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