Heat TransferEasy
Question
The temperature of a perfect black body is 727oC and its area is 0.1 m2. If stefan′s constant is 5.67 × 10-8 Wm-2K-4, then heat radiated by it in 0.3 minutes is :-
Options
A.1701 J
B.17010 J
C.102060 J
D.102.06 J
Solution
Q = σAT4t
= 5.67 × 10-8 × 0.1 × (1000)4 × (0.3 × 60)
= 102060 J
= 5.67 × 10-8 × 0.1 × (1000)4 × (0.3 × 60)
= 102060 J
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