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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionMedium2 minQB

PhysicsMediumsingle choice

A wire of area $A$ is taut with negligible tension between rigid supports at temperature $T$ . It is cooled to $T - Δ T$ . Its expansion coefficient is $α$ and Young modulus $Y$ . The developed tension is:

Options:

Answer:

Solution:

Prevented thermal strain is $α Δ T$ .

$σ = Y α Δ T . F = A σ = Y A α Δ T .$

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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