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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoHeat TransferMedium2 min

PhysicsMediuminteger

Two slabs $A$ and $B$ of equal thickness are placed one on top of the other. The conductivity of $A$ is one-third of that of $B$ . A steady temperature difference of $2 0^{\circ}$ C is maintained across the pair. Find the temperature difference across slab $A$ in $^{\circ}$ C.

Answer:

Solution:

The heat current is equal, so $Δ T \propto \frac{1}{k}$ . $Δ T_{A} : Δ T_{B} = 3 : 1$ , so $Δ T_{A} = \frac{3}{4} \times 20 = 1 5^{\circ}$ C.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer

⏱ 2m

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