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Two bodies of same shape, same size and same radiating power have emissivities 0.2 and 0.4 The ratio of their temperature is .

A

`sqrt3 :1`

B

`sqrt2 : 1`

C

`sqrt5`

D

`1: sqrt3`

Text Solution

Verified by Experts

The correct Answer is:
B

`P=eAsigmaT^(4)rArr(T_(1))/(T_(2))((e_(1))/(e_(2)))^(¼)` .
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