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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoHeat TransferEasy2 min

PhysicsEasysingle choice

A wall has two layers of equal thickness. The conductivity of layer $A$ is three times that of $B$ . The temperature difference across the wall is $4 0^{\circ}$ C. Find the temperature difference across $B$ in $^{\circ}$ C.

Options:

Answer:

Solution:

$Δ T \propto \frac{1}{k}$ , so $Δ T_{A} : Δ T_{B} = 1 : 3$ . $Δ T_{B} = \frac{3}{4} \times 40 = 3 0^{\circ}$ C. D.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer

⏱ 2m

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