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The bulk modulus of a liquid is 3 × 10¹⁰ N m⁻². The pressure required to reduce the volume of liquid by 2% is
- 3 × 10⁸ N m⁻²
- 9 × 10⁸ N m⁻²
- 6 × 10⁸ N m⁻²
- 12 × 10⁸ N m⁻²
Correct answer: 6 × 10⁸ N m⁻²
Solution
Pressure required = bulk modulus times fractional volume change = 3e10 * 0.02 = 6 x 10^8 N/m^2.
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