Question

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:

Answer 1

Answer:

Solution :

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>

.