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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionMedium2 minQB

PhysicsMediuminteger

Two rods differ in length by 20 cm at all temperatures under a constant linear-coefficient law. Coefficients are $1 0^{- 5}$ and $1.5 \times 1 0^{- 5}$ per °C. Find longer length in cm.

Answer:

Solution:

Equal increments require $L_{1} = 1.5 L_{2}$ . With $L_{1} - L_{2} = 20$ , shorter $= 40 cm$ and longer $= 60 cm$ .

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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