Q. 55.0( 1 Vote )

The photocurrent in an experiment on photoelectric effect increases if
A. the intensity of the source is increased

B. the exposure time is increased

C. the intensity of the source is decreased

D. the exposure time is decreased

Answer :

increase in intensity increases the no of photons falling per unit area per unit time is also increased. the no of photoelectron emitted is also increased which increases the photocurrent.

The exposure time does not affect the no of photons emitted or the energy of photon.

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