An 80 watt filament looses all its energy by eadiation from its surface. The emissicity of surface is 0.4. the area of sciface is 5x105m². Calculate temp of filament. Neglect temperature of surroundinge- Stefen's constant (0) = 5.67 x 158 w/m³²kh.
An 80 watt filament looses all its energy by eadiation from its surface. The emissicity of surface is 0.4. the area of sciface is 5x105m². Calculate temp of filament. Neglect temperature of surroundinge- Stefen's constant (0) = 5.67 x 158 w/m³²kh.
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Transcribed Image Text:An 80 watt filament looses all it's energy by eadiation
from its surface. The emissivity of surface is 0.4. the area
of surface is 5x105m². Calculate temp of filament - Neglect
temperature of surroundinge-
Stefan's constant (0) = 5.67 x 158 w/m4kh.
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