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MHT CET Physics question

PhysicsThermal Properties of MatterMHT CET

Three discs x, y and z having radii 2 m, 3 m and 6 m respectively are coated on outer surfaces. The wavelength corresponding to maximum intensity are 300 nm, 400 nm and 500 nm respectively. If , and are power radiated by them respectively then [MHT-CET 2019]

Answer: (A)

Solution

Treating them as black bodies, : x gives , y gives and z gives

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Question ID VK-063884