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Two solid spheres of same ,naterial but ...

Two solid spheres of same ,naterial but diameters in the ratio of 5 : 4 are at temperatures `227^(0) and 127^(0)` C respectively. The temperature of the surrounding is `27^(0)` c and Stefan's law holds. Calculate the ratio of rates of loss of heat of the two spheres?

A

`2:3`

B

`5:34`

C

`24:9`

D

`34:7`

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The correct Answer is:
D
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