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In photoelectric effect the work functio...

In photoelectric effect the work function of a metal is 3.5 eV. The emitted electrons can be stopped by applying a potential of –1.2 V. Then

A

the energy of the incident photon is 4.7 eV

B

the energy of the incident photon is 2.3 eV

C

if higher frequency photon be used, the photoelectric current will rise

D

when the energy of photon is 3.5 eV, the photoelectric current will be maximum

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