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MHT CET Physics question

PhysicsThermal Properties of MatterMHT CET

The energy spectrum of a black body exhibits a maximum around a wavelength ''. The temperature of a black body is now changed such that the energy is maximum around a wavelength . The power radiated by a black body will now increase by a factor [MHT-CET 2021]

Answer: (B)

Solution

Wien's law gives and power gives

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Question ID VK-063827