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PhysicsHeat & ThermoThermal ExpansionMedium2 minQB

PhysicsMediumsingle choice

An iron rod is 10 m long at 27°C, with $α = 0.000011 K^{- 1}$ . Its length falls by 1.1 mm at:

Answer:

Solution:

Cooling magnitude $x = \frac{1.1 \times 1 0 ^{- 3}}{10 ( 11 \times 1 0 ^{- 6} )} = 10 K$ . Cooling by 10 K gives $1 7^{\circ} C$ .

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermal Expansion

⏱ 2mℹ️ Source: QB

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