A compound slab is made with two different materials A and B with coefficient of thermal conductivity and KA = 2KB thickness XA=12XB. If the face of the A surface is at 100°C and that of the B surface is at 25°C the temperature the common surface will be

⇒KA(100−θ)xA=KB(θ−25)xB⇒θ=85∘C

A compound slab is made with two different materials A and B with coefficient of thermal conductivity and KA = 2KB thickness XA=12XB. If the face of the A surface is at 100°C and that of the B surface is at 25°C the temperature the common surface will be

⇒KA(100−θ)xA=KB(θ−25)xB⇒θ=85∘C

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A compound slab is made with two different materials A and B with coefficient of thermal conductivity and K_A = 2K_B thickness $X_{A} = \frac{1}{2} X_{B}$ . If the face of the A surface is at 100°C and that of the B surface is at 25°C the temperature the common surface will be

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85°C

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40°C

15°C

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$\begin{array}{l} \Rightarrow \frac{K_{A} (100 - θ)}{x_{A}} = \frac{K_{B} (θ - 25)}{x_{B}} \\ \Rightarrow θ = 85^{\circ} C \end{array}$

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A compound slab is made with two different materials A and B with coefficient of thermal conductivity and KA = 2KB thickness XA=12XB. If the face of the A surface is at 100°C and that of the B surface is at 25°C the temperature the common surface will be

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A compound slab is made with two different materials A and B with coefficient of thermal conductivity and K_A = 2K_B thickness $X_{A} = \frac{1}{2} X_{B}$ . If the face of the A surface is at 100°C and that of the B surface is at 25°C the temperature the common surface will be