Physics - Heat & Thermo Question with Solution | TestHub

Parallel rays of light of intensity$\mathrm{I}=912\mathrm{ }\mathrm{W}{\mathrm{m}}^{-2}$are incident on a spherical black body kept in surroundings of temperature 300 K. Take Stefan-Boltzmann constant$\mathrm{\sigma }=5.7\times {10}^{-8}\mathrm{ }\mathrm{W}{\mathrm{m}}^{-2}\mathrm{ }{\mathrm{K}}^{-4}$and assume that the energy exchange with the surroundings is only through radiation. The final steady state temperature of the black body is close to