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(A) According to the experimental observations of the photoelectric effect,the photoelectric current is directly proportional to the intensity of the

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photoelectric current increases.

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(A) According to the experimental observations of the photoelectric effect,the photoelectric current is directly proportional to the intensity of the incident radiation,provided the frequency of the radiation is above the threshold frequency.Intensity represents the number of photons incident per unit area per unit time.As intensity increases,the number of photons striking the metal surface per unit time increases.Consequently,the number of photoelectrons emitted per unit time increases,which leads to an increase in the photoelectric current.The kinetic energy of the emitted photoelectrons depends only on the frequency of the incident radiation and the work function of the metal,not on the intensity.

For a given source,with an increase in intensity of incident radiation,the . . . . . .

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