PhysicsThermal expansionWAEC
A metal rod 2 m long expands by 0.8 mm when heated through 20 K. Its linear expansivity is
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Answer: B. 2 × 10⁻⁵ K⁻¹
0.0008 ÷ (2 × 20).
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.