1.

A spherical body of area A and emissivity e = 0.6 is kept inside a perfectly black body. Energy radiated per second by the body at temperature T is ___________

A. 0.4σAT4
B. 0.8 σAT4
C. 0.6 σAT4
D. 1.0 σAT4
Answer» D. 1.0 σAT4


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