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Thermal Physics

plz give me the solution of qes.no 6? correct ans is 1.71p (density)rc

Question image for Plz give me the solution of qes.no 6? correct ans
Profile image of aayushi verma
8 Years agoGrade
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1 Answer

Profile image of Arun
8 Years ago
[In the given problem fall in temperature of body dT=(200−100) = 100K, temp. of surrounding T0 = 0K, Initial temperature of body T = 200K].
100dt=σ4πr243πr3ρcJ(2004−04)
Þ dt=rρcJ48σ×10−6s=rρcσ.4.248 × 10−6
=780rρcσμs~772rρcσμs
[As J = 4.2]