Question: a solar cell is 2 0 % efficient and the intensity of sunlight recieved at the earth's surface is 2 . 5 * 1 0

a solar cell is 20% efficient and the intensity of sunlight recieved at the earth's surface is 2.5*10^12J/km2*h. Assuming an average wavelength of 550 nm and a cell area of 0.1 cm2, what is the maximum number of photons converted to electrical energy each second

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