The temperature drop through each layer of a two layer furnace wall is shown in figure. Assume that the external temperature T₁ and T₃ are maintained constant and T₁ > T₃. If the thickness of the layers x₁ and x₂ are the same, which of the following statements are correct.

Question

G1 Physics · Accepted Answer

In steady conduction, heat current is H=kAΔT/L. Treat each segment as a thermal resistance Rₜₕ=L/(kA); series resistances add and parallel heat currents add. Evaluating the given data/statements gives A: k₁>k₂. Therefore the correct answer is A.

The temperature drop through each layer of a two layer furnace wall is shown in figure. Assume that the external temperature T₁ and T₃ are maintained constant and T₁ &gt; T₃. If the thickness of the layers x₁ and x₂ are the same, which of the following statements are correct.

The temperature drop through each layer of a two layer furnace wall is shown in figure. Assume that the external temperature T₁ and T₃ are maintained constant and T₁ > T₃. If the thickness of the layers x₁ and x₂ are the same, which of the following statements are correct.