Which among the following devices work on the basis of photo-voltaic effect?

Photo-diode

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Light Emitting Diode (LED)

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Solar Cell

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None of these

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Solution

The correct options are
A Photo-diode
C Solar Cell
The photovoltaic effect is the generation of current or voltage in the material when exposed to light. Out of the given options, a photodiode and solar cells work on this effect whereas LED does not.

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