Physics, asked by sakshideshmukh90, 11 months ago

-7. The temperature of the filament of a lamp is
2100K and its surface area is 4 x104m. If the
emissivity of the filament is 0.453 then the power
of lamp is
(1) 100 Watt
(2) 200 Watt
(3) 400 Watt
(4) 0 Watt

Answers

Answered by deva35716

0

Answer:

2

Explanation:

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