Discussion
Electrical output of a solar cell depends on :
Answer: A
The output of a solar cell depends on the intensity of solar radiation.
A photovoltaic cell produces current in proportion to the number of photons absorbed, so the current, and hence the power, rises almost linearly with the intensity of incident sunlight (irradiance). That is why output falls on cloudy days and is highest when the sun is overhead.
Heat (infrared) actually reduces a cell's efficiency, since higher temperature lowers its voltage. Silicon cells respond mainly to visible and near-infrared light, not chiefly to UV or mid-infrared (MIR), so neither component determines the output.
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