Questions
Two spheres, A & B, are made up of the same material. The radius of A is twice that of B, while the temperature of A is half that of B. What is their ratio of energy emitted per unit time (EA : EB)?
detailed solution
Correct option is C
Energy emitted per unit time is given by σeAT4.e & σ will be the same for both.A = 4πr2EAEB=rA2rB2TA4TB4=41116=14Talk to our academic expert!
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