The emissive power of a black body at T = 300 K is 100W//m^(2). Consider a body B of area A=10m^(2), coefficient of reflectivity r = 0.3, and absorptivity a = 0.2. If its temperature is 300K, then mark out the currect statement (s).

The emissive power of a black body at T = 300 K is 100W//m^(2). Consid

1.	The emissive power of a black body at T = 300 K is 100W//m^(2). Consider a body B of area A=10m^(2), coefficient of reflectivity r = 0.3, and absorptivity a = 0.2. If its temperature is 300K, then mark out the currect statement (s).
Answer» The emissive power of B is `20W//m^(2)` The emissive power of B is `200W//m^(2)` The power emitted by B is 20 W The power emitted by B is 180 W. ANSWER :A