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

Options

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

Answer

D

Explanation

If side of the cube is L then `V=L^3implies(dV)/(V)=3(dL)/(L)`
`%` change in volume`=3xx(%`change in length)
`=3xx1%=3%` `because` Bulk strain `(triangleV)/(V)=0.03`