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The rates of heat radiation from two pat...

The rates of heat radiation from two patches of skin each of area A on a patient's chest differ by `2%` If the patch of the lower temp is at `300K` and emissivity of both the patches is assumed to be unity, the temp of other patch would be .

A

`306K`

B

`312K`

C

`308.5K`

D

`301.5K`

Text Solution

Verified by Experts

The correct Answer is:
D
`P = sigma AT^(4)`
`PpropT^(4)rArr(Deltap)/(P)xx100=4((DeltaT)/(T)xx100)`
`:.` temp of other patch `=T -+DeltaT` .
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