Start Free Mock LoginAlready registered? Login here

Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionEasy2 minQB

PhysicsEasysingle choice

Two free rods A and B have lengths 80 cm and 120 cm at 0°C. Their length difference is unchanged on heating. If $α_{A} = 18 \times 1 0^{- 6} K^{- 1}$ , what is $α_{B}$ ?

Options:

Answer:

Solution:

Temperature-independent difference requires $L_{A} α_{A} = L_{B} α_{B}$ .

$α_{B} = (\frac{80}{120}) (18 \times 1 0^{- 6}) = 12 \times 1 0^{- 6} K^{- 1} .$

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

Doubts & Discussion

Loading discussions...