Chemical Engineering > GATE 2013 > Radiation
A hole of area 1 cm2 is opened on the surface of a large spherical cavity whose inside temperature is maintained at 727°C. The value of Stefan-Boltzmann constant is 5.67×10-8 W/m2-K4. Assuming black body radiation, the rate at which the energy is emitted (in W) by the cavity through the hole, up to 3 digits after the decimal point, is
Correct : 5.670
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