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MHT CET Physics question

PhysicsThermal Properties of MatterMHT CET

A black rectangular surface of area emits energy per second at . If length and breadth are reduced to rd of initial value and temperature is raised to , then energy emitted per second becomes [MHTCET 2016]

Answer: (D)

Solution

Area becomes and goes from 300 K to 600 K so increases 16 times; $E' = E × 16/9 =

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Question ID VK-063722