The number of photo-electrons emitted per sec | vedclass

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Question

(D) According to the photoelectric effect,the number of photo-electrons emitted per second is directly proportional to the number of incident photons

Vedclass · Accepted Answer

The intensity of the incident light increases

Vedclass · Answer

(D) According to the photoelectric effect,the number of photo-electrons emitted per second is directly proportional to the number of incident photons per second.Since the intensity of light is defined as the energy incident per unit area per unit time,it is directly proportional to the number of photons incident on the metal surface.Therefore,increasing the intensity of the incident light increases the number of incident photons,which in turn increases the number of photo-electrons emitted per second.Thus,the correct option is $D$.

The number of photo-electrons emitted per second from a metal surface increases when:

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