STANDARD Physics Bulk Modulus MCQ Question
How much pressure should be applied on a litre of water if it is to be compressed by 0.1%? (Bulk modulus of water = 2100 MPa)
2100 kPa
210 kPa
2100 MPa
210 MPa
Correct Answer
Detailed Explanation
The bulk modulus formula is B = P / (ΔV/V). Given B = 2100 MPa and ΔV/V = 0.1/100 = 1×10⁻³, we find P = B × (ΔV/V) = 2100 × 10⁶ Pa × 1×10⁻³ = 2100 × 10³ Pa = 2100 kPa.
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