Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoConductionMedium2 minQB

PhysicsMediummultiple choice

The temperature drops through a two-layer furnace wall by $90 0^{\circ} C$ . Each layer is of equal area of cross-section. Which of the following actions will result in lowering the temperature $θ$ of the interface?

Options:(select one or more)

Answer:

A, D

Solution:

Rate of he at flow is same

$\frac{\frac{θ _{1} - θ}{L _{1}}}{K _{1} A} - \frac{θ - θ _{2}}{\frac{L _{2}}{K _{2} A}}$

Value of $θ$ has to in crease

$l_{1}$ can be increased

$k_{2}$ can be increased

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Conduction

⏱ 2mℹ️ Source: QB

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