A photo cell is a device which

Absorbs light and produces a stream of electrons

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Absorb a stream of electron and produces light

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Converts protons into photons

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Converts photons into protons

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Solution

The correct option is A Absorbs light and produces a stream of electrons
Photocell is a device which converts light energy into electrical energy. In photocell concave metallic cathode absorbs photons from incident light waves and emits electron from the metal surface towards anode.
In other words, it absorbs light and produces a stream of electrons.
Hence, option A is correct.

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