Parallel rays of light of intensity I=912 Wm−2 are incident on a spherical black body kept in surroundings of temperature 300 K . Take Stefan-Boltzmann constant σ=5.7×10−8 Wm−2 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 [Adv. 2014]
a. 330 K
b. 660 K
c. 990 K
d. 1550 K