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(C) In the photoelectric effect experiment,the emission of photoelectrons from the cathode surface occurs only when incident radiation (such as ultrav

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The current drops to zero.

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(C) In the photoelectric effect experiment,the emission of photoelectrons from the cathode surface occurs only when incident radiation (such as ultraviolet light) has a frequency greater than the threshold frequency of the metal.When the incident ultraviolet radiation is stopped,no more photons are striking the cathode surface.Consequently,the emission of photoelectrons ceases immediately.Since the photoelectric current is directly proportional to the number of photoelectrons emitted per unit time,the current drops to zero.

In Lenard's experiment,what is the effect on the photoelectric current when ultraviolet radiation incident on the cathode is stopped?

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