Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionMedium2 minQB

PhysicsMediummultiple choice

An isotropic cube has side L, density d and linear coefficient $α$ . Temperature rises by 10°C. To a good approximation:

Answer:

A, D

Solution:

Length factor is $1 + 10 α$ . Total area is $6 L^{2} (1 + 20 α)$ , so B misses 6. Fixed mass gives density $\frac{d}{( 1 + 30 α )}$ . A,D.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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