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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoHeat TransferMedium2 min

PhysicsMediumsingle choice

Two uniform brass rods $A$ and $B$ of lengths $l$ and $2 l$ and radii $2 r$ and $r$ respectively are heated to the same temperature. The ratio of the increase in the length of $A$ to that of $B$ is:

Options:

Answer:

Solution:

$Δ l = l α Δ T$ does not depend on the radius. The ratio is $l : 2 l = 1 : 2$ . B.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer

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