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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 -
- 330 K
- 660 K
- 990 K
- 1550 K
Correct answer: 330 K
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