A wall is made up of two layers $A$ and $B.$ The thickness of the two layers is the same, but materials are different. The thermal conductivity of $A$ is double than that of $B.$ In thermal equilibrium the temperature difference between the two ends is $36\,^oC.$ Then the difference of temperature at the two surfaces of $A$ will be......... $^oC$
A wall is made up of two layers $A$ and $B.$ The thickness of the two layers is the same, but materials are different. The thermal conductivity of $A$ is double than that of $B.$ In thermal equilibrium the temperature difference between the two ends is $36\,^oC.$ Then the difference of temperature at the two surfaces of $A$ will be......... $^oC$
- A
$6$
- B
$12$
- C
$18$
- D
$24$
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