Photoelectric effect supports quantum nature of light because

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the maximum kinetic energy of the photoelectrons depends only on the frequency of light and not on its intensity

electric charge of the photoelectrons is quantized

even when the metal surface is faintly illuminated the photoelectrons leave the surface immediately

there is a minimum frequency below which no photo electrons are emitted

answer is D.

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Detailed Solution

Photocurrent is the current produced when light falls on a photo diode or a metal with suitable work function. Work function is defined as the minimum energy required to eject an electron from the surface of the material. It also corresponds to the minimum frequency, the photon of which when falls on the surface of a metal, the photoelectron gets ejected.

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