Question

A uniform cube is subjected to volume compression. If each side is decreased by 2% , then bulk strain is
A. 0.01
B. 0.03
C. 0.02
D. 0.06

Answer 1

Correct Answer - D
(d) If side of the cube is L, then `V=L^(3)`
`implies (dV)/(V) =3(dL)/(L)`
`therefore` % change in volume `=3xx` (% change in length )`=3xx2%=6%`
`therefore` Bulk strain, `(DeltaV)/(V)=0.06`