Q99 / 125 · BITSAT 2013 · Physics

A cube is subjected to a uniform volume compression. If the side of the cube decreases by $2 \%$ the bulk strain is

  • A
    0.02
  • B
    0.03
  • C
    0.04
  • Correct answer
    D
    0.06

Solution

\(\begin{aligned} \frac{\Delta a}{d} &=2 \% \\ v &=a^{3} \\ \frac{\Delta v}{v} &=3 \frac{\Delta a}{d} \\ &=6 \% \\ &=0.06 \end{aligned}\)

Hence, the correct answer is option: 'D'.

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