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A black body radiates 3 J/cm^(2) s when ...

A black body radiates 3 J/`cm^(2)` s when its temperature is `127^(@)C`. How much heat will be radiated/`cm^(2)` s when its temperature is `527^(@)C`?

A

6

B

12

C

3.84

D

48

Text Solution

Verified by Experts

The correct Answer is:
D
`E_(1)=sigmaT_(1)^(4) and E_(2)=sigmaT_(2)^(4)`
`E_(2)=((T_(2))/(T_(1)))^(4)E_(1)=((800)/(400))^(4)E_(1)=16E_(1)`
`E_(2)=48J//s" "cm^(2)`
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