PhysicsThermal expansionJAMB
A metal rod 2 m long has a linear expansivity of 1.2 × 10⁻⁵ K⁻¹. Find its increase in length when heated through 50 K.
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Answer: C. 1.2 × 10⁻³ m
ΔL = αLΔθ = 1.2 × 10⁻⁵ × 2 × 50 = 1.2 × 10⁻³ m.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.