Question

If ‘I’ is the intensity of the solar radiation at a distance ‘x’ from the surface of the Sun, and if ‘A’ is the surface area of a solar flat plate collector placed at x, with its surface directly facing the sun, and with ‘I’ and ‘A’ given in SI units, the power falling on the collector is given by _________ Watts

Answer 1

I = intensity of the solar radiation falling at "x"

A = area of solar flat plate

Power falling on the collector is given as

P = I A