MHT CET 2025 Physics question
Two bodies A and B at temperatures 'T' K and 'T' K respectively have the same dimensions. Their emissivities are in the ratio 16:1. At T = x T, they radiate the same amount of heat per unit area per unit time. The value of x is
Answer: (D)
Solution
By Stefan's law the heat radiated per unit area per unit time is . Setting them equal: . With and : , so
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