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Thermal resistance
A metallic sphere having inner and outer radii a and b respectively has thermal conductivity
k=ko/r^2 (a<= r <=b) The thermal resistance between inner and outer surface is- 1) b-a / 4pie ko 2)b^2-a^2 / 4pie ko ab 3) 4pie ko / b-a 4) None of these |
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