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Which is // are incorrect observations r...

Which is `//` are incorrect observations related to photoelectric effect ?

A

When intensity of light is increased then kinetic energy of photo electron increases

B

If frequency of incident light isless than threshold frequency photoelectron is ejected from the metal surface, if we increase the intensity light

C

Photoelectric current is proportionalto the frequency of incident light

D

When frequency of light is increased , velocity of photoelectron increased

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The correct Answer is:
1,2,3
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