The thermal radiative flux from a surface of emissivity = 0...

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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 = 5.67 × 10^-8 W/m².K⁴)

A. 1000

B. 727

C. 800

D. 1200

Answer: Option A

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