Question

If longitudinal strain for a wire is $0.03$ and its Poisson's ratio is $0.5,$ then its lateral strain is

• A. $0.003$
• B. $0.0075$
• C. $0.015$
• D. $0.4$

Answer 1

Answer: (C)

Poisson's ratio $\sigma =\frac{\text{lateral strain}}{\text{longitudinal strain}}$
Given $\sigma =0.5$, longitudinal strain $=0.03$
$=$ Lateral strain $=0.5\times 0.03$
$=0.015$