Question

A perfectly black surface emits radiant energy of 4 X 10⁵ J at a temperature 400K. Energy radiated by another surface with e =0.45 of same area in the same time at same temperature is

Answer 1

Explanation:

Emmisivity= Energy emitted by body/ energy by the black body

=> .45*4× 10^5 = 1.8×10^5 J

Answer 2

Answer:

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Explanation:

ejxrncc kfze hxdhb