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MHT CET Physics question

PhysicsThermal Properties of MatterMHT CET

The power radiated by a black body is and it radiates maximum energy at wavelength . If the temperature of the black body is now changed, so that it radiates maximum energy at wavelength , the power radiated by it becomes . The value of is

Answer: (A)

Solution

= constant gives and gives 3)^4$ =

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Question ID VK-063710