A body is in thermal equilibrium with the surrounding, then the ratio of Amount of radiations emitted and absorbed by it will be equal to ?

…. radiation is emitted by hot bodies.

Thermal equilibrium implies the equality of

A sphere of 8cm radius behaves like a black body. It is in thermal equilibrium with the surrounding and absorbs 10 W of power radiated to it from surrounding. The temperature of the sphere ( sigma=5.67xx10^(-8)W//m^(2)K^(4) ) is approximately.

A sphere of 8cm radius behaves like a black body. It is in thermal equilibrium with the surrounding and absorbs 10 W of power radiated to it from surrounding. The temperature of the sphere ( sigma=5.67xx10^(-8)W//m^(2)K^(4) ) is approximately.

The amount of radiation emitted by a perfectly black body is proportional to .

The amount of radiation emitted by a perfectly black body is proportional to .

When is a body said to be in thermal equilibrium?