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Describe photoelectric effect and state ...

Describe photoelectric effect and state the laws of photoelectric emission.

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The laws of photoelectric emission are as follows:
(A) The number of electrons emitted per second is directly proportional to the intensity of radiation.
(B) The maximum kinetic energy of electrons emitted increases with the frequency of the radiation.
(C) There is a minimum frequency called threshold frequency below which no emission occurs.
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