cse • paper_1 • electrodynamicscse-1986-subject-03-004
Blackbody radiation — UPSC CSE 1986 Physics PYQ
Buy PYQ Solution Manual →Calculate the power radiated by a tungsten filament 10 cm long and 0.010 mm in diameter, when it is heated to 2,500 K in an evacuated bulb. Assume that the filament radiates at 30% of the rate of a black body at the same temperature.
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