Question

An ordinary body. A and a perfect black body
are maintained at the same temperature. If the
radiant Power of Ais 240 2x10² W/m2 and that
OR B is BX 104 W/m2, what is the Coefficient of
emission (emissivity) of A?​

Answer 1

Answer:

Pleeeeeeeeeeeeese

Explanation:

please

Answer 2

Answer:

Coefficient of emission of A is 2.307.

Explanation:

Emissive power of A= $E_A$ = 240 $W/m^2$

Emissive power of B = $E_B$ =$104W/m^2$

Coefficient of emission of a body is the ratio of the emissive power of the body at a given temperature to the emissive power of a perfect black body at the same temperature.

Coefficient of emission, $e=\frac{E_A}{E_B}$

$\implies e= \frac{240}{104}=2.307$

Coefficient of emission of A is 2.307.

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