JEE Main 2026 · 4 Apr · Shift 1 · Physics Q27

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PhysicsSingle correct+4 / -1Question 27 of 75

The increase in the pressure required to decrease the volume ( $\Delta V$ ) of water is $6.3\times10^7$ N/m². The percentage decrease in the volume is ________.
(Bulk modulus of water $=2.1\times10^9$ N/m².)

2 %

3 %

6 %

4 %

Answer and worked solution

Official answer: B

Bulk modulus. $\dfrac{\Delta V}V=\dfrac{\Delta P}B=\dfrac{6.3\times10^7}{2.1\times10^9}=0.03$ , i.e. 3%.

(B)

Topics:Hooke's law and elastic moduli

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JEE Main 2026 · 4 Apr · Shift 1, Physics question 27