## Light Bulb

A light bulb is completely covered with a thin coat of black soot in a room maintained at 20 degree celsius. If the shell has an equilibrium temperature of 100 degree celsius. What is the wattage of the bulb?

I cant understand how to do it. I am a student of 9th standard.

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 Quote by ritwik06 A light bulb is completely covered with a thin coat of black soot in a room maintained at 20 degree celsius. If the shell has an equilibrium temperature of 100 degree celsius. What is the wattage of the bulb? I cant understand how to do it. I am a student of 9th standard.
Do they give you the radius or area of the lightbulb?

AM

 Quote by Andrew Mason Do they give you the radius or area of the lightbulb? AM
No nothing at all!!!!!!!!!!!!!!!!!!! I have provided everything given at the question. If it isnt possible just tell me a way hot to prove that the given data is insufficient.

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