Consider a black body radiation in a cubical box at absolute temperature T. If the lengh of each side of the box is doubled and the temperature of the
Consider a black body radiation in a cubical box at absolute temperature T. If the lengh 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
A. halves
B. doubles
C. quadruples
D. remains constant
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Correct Answer - D
Assuming the temperature of the bady and cubical box is same initially . i.e. T and finally it becomes `T//2` Because , temperature of body and surroundings remains same.
Hence ,no net loss of radiation occur through the body. This total energy remains constant.
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