Parallel rays of light of intensity I = 912 W m –2 are incident on a spherical black body…
Physics · JEE Advanced · NTA Exams — Thermodynamics
Parallel rays of light of intensity I = 912 W m–2 are incident on a spherical black body kept in surroundings of temperature 300 K. Take Stefan-Boltzmann constant σ = 5.7 × 10–8 W m–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
Answer
(B) 660 K
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