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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionEasy2 minQB

PhysicsEasysingle choice

A metal cylinder of radius $R$ and height $H > 2 R$ is heated. If $η_{H}, η_{R}, η_{S}, η_{V}$ are the fractional changes in height, radius, surface area and volume, respectively, then:

Options:

Answer:

Solution:

For isotropic expansion,
$η_{H} = η_{R} = α Δ T$
$η_{S} = 2 α Δ T$
$η_{V} = 3 α Δ T$
Thus
$η_{V} > η_{S} > η_{H} = η_{R}$

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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