The number of photoelectrons emitted for ligh | vedclass

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Question

(B) According to the photoelectric effect,the number of photoelectrons emitted per unit time is directly proportional to the number of incident photon

Vedclass · Accepted Answer

intensity of light

Vedclass · Answer

(B) According to the photoelectric effect,the number of photoelectrons emitted per unit time is directly proportional to the number of incident photons per unit time.Since the intensity of light is defined as the energy incident per unit area per unit time,and for a given frequency $
u$,the energy of each photon is $E = h
u$ (a constant),the intensity is directly proportional to the number of incident photons.Therefore,the number of photoelectrons emitted is directly proportional to the intensity of the incident light,provided the frequency $
u$ is greater than the threshold frequency $
u_0$.

The number of photoelectrons emitted for light of a frequency $\nu$ (higher than the threshold frequency $\nu_0$) is proportional to

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