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MHT CET Physics question

PhysicsThermal Properties of MatterMHT CET

A blackened metal foil is warmed by radiation from a point source, whose temperature is T and distance from the foil is d. It is found that the power received by the foil is P. If both the temperature and distance are doubled, the power received by the foil will be

Answer: (A)

Solution

Power received , so doubling both gives times, i.e.

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Question ID VK-063146