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Two black bodies at 327^(@)C and 627^(@)...

Two black bodies at `327^(@)C` and `627^(@)C` are suspended in an environment at `27^(@)C` The ratio of their emissive powers is .

A

`15 :8`

B

`16 :3`

C

`3:16`

D

`5:8`

Text Solution

Verified by Experts

The correct Answer is:
C
`E=sigma(T^(4)-T_(0)^(4))rArr(E_(1))/(E_(2))=(T_(B1)^(4)-T_(0)^(4))/(T_(B_(2))^(4)-T_(0)^(4))`
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