1233. The thermal radiative flux from a surface of emissivity = 0.4 is 22.68 kW/m². The approximate surface temperature (K) is (Stefan-Boltzman constant = 5.67xl0⁻⁸ W/m².K⁴) September 7, 2025 by Admin 1000 727 800 1200 ✅ The correct answer is option A.
