Question

A uniform cube is subjected to volume compression. If each side is decreased by $1\%,$ , then bulk strain is

• A. $0.01$
• B. $0.06$
• C. $0.02$
• D. $0.03$

Answer 1

Answer: (D)

$v=l^3$
$\frac{\Delta v}{v}=\frac{3\Delta l}{l}=\frac{3}{100}\left(\frac{\Delta l}{l}\times 100\right)$
$=\frac{3}{100}\times 1=0.03$