JEE Main 2022 · 24 Jun · Shift 1 · Physics Q31

PhysicsSingle correct+4 / -1Question 31 of 90

The bulk modulus of a liquid is $3\times10^{10}\ \mathrm{Nm^{-2}}$ . The pressure required to reduce the volume of liquid by 2% is :

3\times10^8\ \mathrm{Nm^{-2}}

9\times10^8\ \mathrm{Nm^{-2}}

6\times10^8\ \mathrm{Nm^{-2}}

12\times10^8\ \mathrm{Nm^{-2}}

Answer and worked solution

Official answer: C

Bulk modulus. $B=\dfrac{\Delta P}{\Delta V/V}$ , so $\Delta P=B\,\dfrac{\Delta V}V=3\times10^{10}\times0.02=6\times10^8$ N m $^{-2}$ .

(C)

Topics:Hooke's law and elastic moduli

JEE Main 2022 · 24 Jun · Shift 1, Physics question 31