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What is the photoelectric effect? With t...

What is the photoelectric effect? With the help of suitable graph show the variation of photocurrent with (i) the intensity of incident radiation. (ii) the voltage applied between cathode and anode. (iii) the frequency of incident radiation.

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When a light of suitable wavelength falls on the metallic surface due to which electrons starts ejecting from the surface is called photoelectric effect.
The variation of photocurrent with (i) intensity of incident radiation, (ii) the applied voltage between cathode and anode (iii) the frequency of incident radiation, are shown in the following figure (A), (B) and (C) respectively.
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