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MHT CET Physics question

PhysicsThermal Properties of MatterMHT CET

Two balls A and B are made of same material, but the diameter of B is four times that of A. Both are heated to the same temperature and then placed in the similar surroundings. Let the rate of loss of heat by A be and that by B is . Which of the following correctly describes the loss of heat by them?

Answer: (A)

Solution

Rate of heat loss is proportional to surface area, i.e. to , so

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Question ID VK-063145