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The electrons are emitted in the photoel...

The electrons are emitted in the photoelectricm effect from a metal surface

A

Only if the frequency of the incident radiation is above a certain threshold value

B

Only if the temperature of the surface is high

C

At a rate that is independent of the nature of the metal

D

With a maximum velocity proportional to the frequency of the incident radiation

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The correct Answer is:
A
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