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A spherical black body of radius r radia...

A spherical black body of radius r radiated power `P` at temperature T when placed in surroundings at temprature `T_(0) (lt ltT)` If `R` is the rate of colling .

A

`Palpha(T -T_(0))`

B

`PaT^(4)`

C

`Palphar^(2)`

D

`R alpha(1)/(r )`

Text Solution

Verified by Experts

The correct Answer is:
C, D
`Ra(T-T_(0))`and`P=sigmaA(T^(4)-T_(0)^(4))`
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