find its emissivity e.

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The operating temperature of an incandescent bulb (with a tungsten filament) of power 60 W is 3000 K. If the surface area of the filament be 25 mm^2, find its emissivity e.
01
Sep
The operating temperature of an incandescent bulb (with a tungsten filament) of power 60 W is 3000 K. If the surface area of the filament be 25 mm^2, find its emissivity e. find its emissivity e. The operating temperature of an incandescent bulb (with a tungsten filament) of power 60 W is 3000 K. If [...]
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