A) sphere
B) cube
C) circular plate
D) all at the same rate
Correct Answer: C
Solution :
Rate of flow of heat is given by \[H=\frac{KA\Delta \theta }{l}\]where A is area, K the coefficient of thermal conduction, A6 the change in temperature. \[\therefore \] \[H\propto Area\text{ }(A)\] Since, surface area is maximum for circular plate, hence it cools fastest.You need to login to perform this action.
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