Question

The value of Poisson's ratio lies between

• A. –1 to $\frac { 1 } { 2 }$
• B. $- \frac { 3 } { 4 }$ to $- \frac { 1 } { 2 }$
• C. $- \frac { 1 } { 2 }$ to 1
• D. 1 to 2

Answer 1

Answer: (A)

–1 to $\frac { 1 } { 2 }$

Answer 2

$Y = 3 K ( 1 - 2 \sigma ) , Y = 2 \eta ( 1 + \sigma )$

For $Y = 0$ we get $1 - 2 \sigma = 0$, also $1 + \sigma = 0$

$\Rightarrow \sigma$ lies between $\frac { 1 } { 2 }$ and $- 1$.