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Consider a black body radiation in a cub...

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 the same

Text Solution

Verified by Experts

The correct Answer is:
D
Consider the temperature of the body and cubical box is same initially i.e., T and finally it becomes t//2 Because temperature of body and surrounding remains same hence there is no net loss of radiation through the body thus total energy remain same .
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