Consider the following statements. (A) The coefficient of linear expansion has dimension K–1. (B) The coefficient of volume expansion has dimension K–1.

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(a) A and B are correct. The coefficient of linear expansion, ∝ =1/L (ΔL)/(ΔT) =|L|/|LT| =K^-1 Here, L = initial length ΔL = change in length ΔT = change in temperature On the other hand, the coefficient of volume expansion, γ = `1/V (ΔV)/(ΔT) = |L^3|/|L^3T| = K^-1` Here, V = initial volume Δ V = change in volume ΔT = change in temperature K = kelvin, the S.I. unit of temperature

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