What is the possible value of Poisson's ratio of a substance?

Options

A. `-1` to `(1)/(2)`
B. `-(3)/(4)` to `-(1)/(2)`
C. `-(1)/(2)` to `1`
D. `(1)/(R^2 )`

Answer

A

Explanation

`Y=3K(1-2sigma)Y=2eta(1+sigma)`
For `Y=0`, we get `1-2sigma=0`, also `1+sigma=0`
`impliessigma` lies between `(1)/(2)` and `-1`