Question: Consider an opaque, diffuse surface whose spectral reflectivity varies with wavelength as shown. The surface is at 750 K, and irradiation on one side varies

Consider an opaque, diffuse surface whose spectral reflectivity varies with wavelength as shown. The surface is at 750 K, and irradiation on one side varies with wavelength as shown. The other side of the surface is insulated. What are the total absorptivity and emissivity of the surface? What is the net radiative heat flux to the surface?

0.6 500 0.4 0.2 01 2 3 4 5 6 7 8

0.6 500 0.4 0.2 01 2 3 4 5 6 7 8 1 2 3 4 O12 3

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