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PHYSICS

JAMB 2019 - Question 18

Physics 2019 JAMB Past Questions - Question 18: A bar of initial length /0 is heated through a temperature change Δt to a new length I. The linear expansivity, a, of the bar is

Choose the correct answers from the options given.

A bar of initial length /0 is heated through a temperature change Δt to a new length I. The linear expansivity, a, of the bar is

A: l−lo/Δt

B: l-lo/oΔt

C: lo(1 + Δ t)

D: l−lo/(1+Δt)

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Correct Answer

Explanation

α = L – Lo/Lo Δt