Heat and Thermal ExpansionHard

Question

A and Bare two points on a uniform metal ring whose center is C. The angle ABC  = θ. A and B maintained at two different constant temperatures. When θ  = 180o, the rate of total heat flow from A to B is . 1.2 W When θ = 90o, this rate will be :-

Options

A.0.6 W
B.0.9 W
C.1.6 W
D.1.8 W

Solution

       
R =
HI = = 1.2 W
HII = × 1.2 = 1.6 W

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