The total emissive power of a surface is 500 W/m 2 at a temperature T 1 and 1200 W/m 2 at a temperature T 2 . Where the temperatures are in Kelvin. Assuming the emissivity of the surface to be constant, the ratio of the temperatures {T_{1}}/{T_{2}} is

GATE Mechanical Engineering (ME) 2015 Shift 2 Solved Paper

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The total emissive power of a surface is 500 W/m² at a temperature T₁ and 1200 W/m² at a temperature T₂. Where the temperatures are in Kelvin. Assuming the emissivity of the surface to be constant, the ratio of the temperatures

\;{T_{1}}/{T_{2}}

0.308
0.416
0.803
0.874

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