Q.

The increase in pressure required to decrease the volume of a water sample by 0.2% is P×105 Nm–2. Bulk modulus of water is 2.15×109 Nm–2. The value of P is __________.          [2025]


Ans.

(43)

Since bulk modulus is given as

B=–△P(△VV)

2.15×109=–△P–(0.2100)

△P=2.15×109×2×10–3=4.3×106=43×105 N/m2