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Grade 11Thermal Physics

the outer faces of rectangular slab made up of equal thickness of iron and brass are maintained at 100 degree and 0 degree celcius given the thermal conductivities of iron and brass are 0.2 and 0.3 respectively. how to find the temperature at the interface?

Profile image of Urvashi Kaul
10 Years agoGrade 11
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1 Answer

Profile image of GURIYA GUPTA
7 Years ago
Rate of flow of heat energy through iron=rate of flow of heat energy through brass
KA(dT)/l= KA(dT)/l
As Area and length are same, therfore,
0.2(100-T)=0.3(T-0)
20-0.2T=0.3T
T=20/0.5
T=40°C

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