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Two spherical black bodies of radii r(1)...

Two spherical black bodies of radii `r_(1)` and `r_(2)` and with surface temperatures `T_(1)` and `T_(2)` respectively radius the same power . Then, `r_(1)/r_(2)` must be equal to

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The correct Answer is:
9
`lamda_(m)T=`constant. `lamda_(A)T_(A)=lamda_(B)T_(B)`
Now rate of total energy radiated `propAT^(4)`
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