Heat and Thermal ExpansionHard
Question
There is a small hole in a container. At temperature should it be maintained in order that it emits one calorie of energy per second per meter2 :-
Options
A.10 K
B.500K
C.200 K
D.100 K
Solution
From Stefan′s law 
⇒ ᐃQ = σAT4 ⇒
= 5.67 × 10-8 × 1× T4 ⇒ T = 100 K
⇒ ᐃQ = σAT4 ⇒
= 5.67 × 10-8 × 1× T4 ⇒ T = 100 KCreate a free account to view solution
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