Q. The increase in pressure required to decrease the 200 L volume of a liquid by 0.008% in $kPa$ is (Bulk modulus of the liquid = 2100 $MPa$ is)

A) 8.4
B) 84
C) 92.4
D) 168
Explanation

(b) Bulk modulus $K = \frac{\mathrm{\Delta}p}{\mathrm{\Delta}V}V$
$\mathrm{\Delta}p = \frac{K\mathrm{\Delta}V}{V}$
$\mathrm{\Delta}p = \frac{2100 \times 10^{6} \times 0.008}{200} = 84\ kPa$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.