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A photon of energy hv is absorbed by a f...

A photon of energy hv is absorbed by a free electron of a metal having work- function `phi lt hv`. Choose the correct option(s).

A

Number of electrons coming out depends on magnitude of v .

B

The electron is sure to come out with a kinetic energy `hv - phi`

C

Either the electron does not come out or it comes out with a kinetic energy `hv - phi`

D

It may come out with a kinetic energy less than and equal to `hv - phi`

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The correct Answer is:
D
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