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Solar constant (S) is defined as the average power received from the sun's radiation per square metre of earth's surface. Calculate S assuming sun's radius ( R) as 6.95x108 m, the mean earth-sun distance (r ) as 1.49x10^11 m, sun's surface temperature T = 5740 K and Boltzmann's constant s = 5.67x10^(-8) W/m2 /K4 . |
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