Question

Poisson's ratio cannot exceed

• A. 0.25
• B. 1
• C. 0.75
• D. 0.5

Answer 1

The correct option is D 0.5

Poisson's ratio = Lateral strain/Longitudinal strain

$Y=3K(1-2\mu )\Rightarrow \mu =0.5-Y/6K$

$Y$ is young's modulus.

$\mu$ is poisson ratio

$K$ is compressibility of the substance which is inverse of Bulk's modulus. Maximum value of $K$ is $\infty$

So maximum value of Poisson's ratio $\mu =0.5$