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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermal ExpansionEasy2 minQB

PhysicsEasynumerical

A 2 m rod has $α = 8 \times 1 0^{- 6} K^{- 1}$ . Its fractional length tolerance is 2 ppm. Find maximum temperature deviation magnitude in K, to two decimals.

Answer:

0.25

Solution:

Let x be the temperature deviation magnitude. $αx \leq 2 \times 1 0^{- 6}$ gives $x \leq 0.25 K$ . Rod length cancels.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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