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A black body at a temperature of 227^(@)...

A black body at a temperature of `227^(@)C` radiates heat energy at the rate of 5 cal/`cm^(2)`-sec. At a temperature of `727^(@)C`, the rate of heat radiated per unit area in cal/`cm^(2)`-sec will be

A

400

B

80

C

40

D

15

Text Solution

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The correct Answer is:
B
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