The velocity of heat radiation in vacuum is

$A$ body has a transmission power of $1/6$ and a reflection power of $1/3$. Find its absorption power.

Heat energy is incident on the surface of a material at the rate of $1000 \ J \ min^{-1}$. If the coefficient of absorption is $0.8$ and the coefficient of reflection is $0.1$,then the amount of heat energy transmitted through the material in $5$ minutes is: (in $J$)

One likes to sit under sunshine in the winter season,because

The temperature of the sun is measured with:

When a body has the same temperature as that of its surroundings,which of the following statements is true?