Assume All the Power Consumed by a 75 W Light

question 3

Multiple Choice

Assume all the power consumed by a 75 W light bulb is emitted by the filament,which you can treat as a black-body.Treat the filament as a cylinder of diameter 1.0 mm and length 1.5 cm.What is the temperature of the filament?

• A)1300 K
• B)2300 K
• C)2500 K
• D)3100 K
• E)18,000 K

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