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Q.

In photoelectric effect, the photo-current

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a

increases with increase of frequency of incident photon

b

decreases with increase of frequency of incident photon

c

does not depend on the frequency of photon but depends only on the intensity of incident light

d

depends both on intensity and frequency of the incident photon

answer is C.

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Detailed Solution

By increasing frequency, the energy of incident photon is changed but the number of photons is not changed. To increase the photo-current, the number of electrons emitted per second should be increased. This can be done by increasing the incident intensity
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