Heat TransferHard
Question
Radius of two spheres of same material are 1 & 4 m respectively and their temp. are 4 × 103 and 2 × 103 K respectively. Then ratio of emitted energy of spheres per sec. will be -
Options
A.1 : 21 : 2
B.2 : 1
C.1 : 1
D.4 : 1
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