Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionMedium2 minQB

PhysicsMediumsingle choice

A 30 cm A rod extends 0.12 cm over 100 K; a 30 cm B rod extends 0.06 cm. A 30 cm composite A-B rod extends 0.10 cm over 100 K. Find its B length.

Answer:

Solution:

Let B length be $x cm$ .

$Δ L = \frac{0.12 ( 30 - x )}{30} + \frac{0.06 x}{30} . 0.10 = 0.12 - 0.002 x . x = 10 cm .$

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

Loading discussions...