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A spherical solid blakc body of radius '...

A spherical solid blakc body of radius 'r' radiates power 'H' and its rate of cooling is 'C'. If density is constant then which of the following is/are true.

A

`HproprandCpropr^(2)`

B

`Hpropr^(2)andCprop1/(r)`

C

`HproprandCpropr^(3)`

D

`Hpropr^(2)andCpropr`

Text Solution

Verified by Experts

The correct Answer is:
B
`H=sigmaeAT^(4)` `HalphaAalphar^(2)`
`C=(sigmaeA)/(ms)(4T_(S)^(3)DeltaT)` `CalphaA/(m)alphar^(2)/r^(3)alpha1/(r)`
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