The emissive power of a black body at. Consider a body B of area
, coefficient of reflectivity
and absorptivity
. If its temperature is 300 K, then markout the correct statement.
The emissive power of B is 20 W/m2
The emissive power of B is 200 W/m2
The power emitted by B is 20 W
The power emitted by B is 180 W