The increase in the pressure required to decrease the volume ( $\Delta V$ ) of water is $6.3 \times 10^7 \mathrm{~N} / \mathrm{m}^2$. The percentage decrease in the volume is $\_\_\_\_$ .
(Bulk modulus of water $=2.1 \times 10^9 \mathrm{~N} / \mathrm{m}^2$.)
- A
2 %
- B
3 %
- C
6 %
- D
4 %
✓ Correct answer: B
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