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The temperatures of two plates connected by a copper rod are maintained at...

Q.  
The temperatures of two plates connected by a copper rod are maintained at (T1) 500 K and (T2) 350 K. Find the rate of heat transfer through the rod if the diameter (d) of the rod is 15 cm and length (L) is 1.5 m. Assume that the thermal conductivity is 0.4 kW/nK and there is no heat transfer on the surface of the rod.


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Answer :   Option: B


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