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In physical sense, compressibility is the fractional change in volume of the fluid element per unit change in_____(a) Mass(b) Temperature(c) Pressure(d) DensityI got this question during an internship interview.Origin of the question is Definition of Compressibility in chapter Compressible Flow – Preliminary Aspects of Aerodynamics

Answer»

The correct OPTION is (c) Pressure

The BEST I can explain: The compressibility is DEFINED as the fractional change in the volume of the fluid element PET unit change in pressure. It is a negative quality since the volume decreases as pressure increases and vice VERSA.



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