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A rate of radiation of a perfectly blac...

A rate of radiation of a perfectly black body at `0^@ C` is X `j/sec`. The rate of radiation of the same body at `273^@C` is

A

a)16 X `j /sec`

B

b)8 X `j/sec`

C

c)4 X `j/sec`

D

d)X `j/sec`

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The correct Answer is:
A
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