A sphere of 3 cm radius acts like a black body. If it is in equilibrium with its surrounding and absorb 30 K watt of energy radiated to it from the surrounding. Then the temperature of the sphere will be:
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Radius of sphere
the energy absorbed <br>
watt <br> Energy absorbed by black when the temperature of surrounding is
, is given by <br>
<br> or
<br>
<br>
<br>
.
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