In the photoelectric effect:A. The photocurre | vedclass

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(A) $1$. The photocurrent is directly proportional to the intensity of the incident radiation because intensity is proportional to the number of incid

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$A$ and $C$ only

Vedclass · Answer

(A) $1$. The photocurrent is directly proportional to the intensity of the incident radiation because intensity is proportional to the number of incident photons,which in turn is proportional to the number of emitted photoelectrons. Thus,statement $A$ is correct.$2$. According to Einstein's photoelectric equation,$KE_{\max} = h
u - \phi$,where $h$ is Planck's constant,$
u$ is the frequency of incident light,and $\phi$ is the work function of the metal. This equation shows that $KE_{\max}$ depends on the frequency of the incident light,not its intensity. Thus,statement $C$ is correct,while statements $B$ and $E$ are incorrect.$3$. The emission of photoelectrons requires a minimum threshold frequency,not a minimum threshold intensity. Thus,statement $D$ is incorrect.Therefore,statements $A$ and $C$ are correct.

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