Question

If stress-strain relation for volumetric change is in the form $\frac{\Delta V}{V_0}=KP$ where $P$ is applied uniform pressure, then $K$ stands for

• A. shear modulus
• B. compressibility
• C. Young's modulus
• D. bulk modulus

Answer 1

The correct option is B compressibility

Bulk modulus $=\frac{P}{\Delta V/V}$
Compressibility$=\frac{1}{Bulkmodulus}=\frac{\Delta V/V}{P}=K$(Compressibility)