Que: Which one of the following is correct in respect of Poisson's ratio (µ) limits for an isotropic solid? (Engg Services-2004)

(a) - ∞ ≤ µ ≤ ∞

(b) ¼ ≤ µ ≤ 1/3

(c) -1 ≤ µ ≤ ½

(d) - ½ ≤ µ ≤ 1/2

Ans: (b)

Explanation: Poisson's ratio always lies between 0.25 and 0.33 for most of the engineering materials.