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  • A partition wall has two layers A and B in contact with each other. They have the same thickness but the thermal conductivity of layer A is twice that the temperature difference across the layer B

A partition wall has two layers A and B in contact with each other. They have the same thickness but the thermal conductivity of layer A is twice that the temperature difference across the layer B is 50K, then the corresponding difference across layer A is

Option: 1

50K


Option: 2

12.5K


Option: 3

25K


Option: 4

60K


Answers (1)

best_answer

As we have learnt,

@2729

\frac{\Delta T_1}{R_1} = \frac{\Delta T_2}{R_2}

\Delta T_1 = \Delta T_2\left(\frac{R_1}{R_2} \right )

\Delta T_1 = \Delta T_2\cdot \left(\frac{K_2}{K_1} \right )

\Delta T_1 = 50K\times \left(\frac{1}{2} \right ) = 25 K

Posted by

Divya Prakash Singh

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