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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionMedium2 minQB

PhysicsMediumsingle choice

A metal floats on mercury. Their cubical expansion coefficients are $γ_{1}$ and $γ_{2}$ . On heating both through $Δ T$ , the submerged fraction changes by a factor:

Options:

Answer:

Solution:

$f = \frac{ρ _{m}}{ρ _{H g}}$ .

$ρ_{i}^{'} = \frac{ρ _{i}}{( 1 + y _{i} Δ T )} . \frac{f ^{'}}{f} = \frac{( 1 + y _{2} Δ T )}{( 1 + y _{1} Δ T )} .$

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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