$A$ total radiation of $400 \ J$ is incident on a body. If $20\%$ of the radiation is reflected and $120 \ J$ is absorbed,find the percentage of the transmittive power.

Which of the following laws states that "good absorbers of heat are good emitters"?

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 $J$)

If the absorptance and reflectance of a surface are $0.4$ and $0.6$ respectively,then:

If the transmission power of a surface is $\frac{1}{9}$ and the reflective power is $\frac{1}{6}$,then what is its absorptive power?

When $p$ calories of heat is given to a body,it absorbs $q$ calories; then the absorption power of the body will be