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Radius of two spheres of same material are 1m and 2m respectively and their temperatures are 4 and 2K respectively. Then ratio of emitted energy of spheres per second is?

 
Radius of two spheres of same material are 1m and 2m respectively and their temperatures are 4 and 2K respectively. Then ratio of emitted energy of spheres per second is?
 

Grade:12th pass

1 Answers

Arun
25763 Points
3 years ago

Energy radiated per second by a body at a temperature T is given by stefen's law

E= σAT2

Use this formula for both and find the ratio which would come out to be 1:1.

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