Question

For silver, Young's modulus is $7.25\times {10}^{10}N{m}^{-2}$ and Bulk modulus is $11\times {10}^{10}N{m}^{-2}$. The Poisson's ratio will be:

• A. $-1$
  
• B. $0.5$
  
• C. $0.39$
  
• D. $0.25$
  

Answer 1

The correct option is C $0.39$

We have the relation as
$Y=3K(1-2\sigma )$
Substituting we get
$7.25\times {10}^{11}=3\times 11\times {10}^{10}(1-2\sigma )$
or
$\sigma =0.39$