AP EAMCET 22 May 2023 Shift 1 Paper

Question : 96 of 160

Marks: +1, -0

A 567W bulb has a tungsten filament of length 40‌cm and radius ‌

‌mm. If the radiation of filament is 81% of that of a perfect black body, then the temperature of filament is
(Stefan's constant, σ=5.67×10−8Wm−2K−4 )

2500K
1666.7K
1333.3K
999.6K

Validate

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