MHT CET Physics question

PhysicsThermal Properties of MatterMHT CET

Consider a black body radiation in a cubical box at absolute temperature . If the length of each side of the box is doubled and the temperature of the walls of the box and that of the radiation is halved, then the total energy

Answer: (A)

Solution

Radiation energy density and the total energy ; with and ,

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Question ID VK-063669