Question

The slope of the graph given below, is equal to

• A. Bulk modulus
• B. Young's modulus
• C. Modulus of rigidity
• D. Compressibility

Answer 1

The correct option is D Compressibility

As the graph is a straight line,

$\Rightarrow \text{slope}=\frac{\text{volumetric strain}}{\text{volumetric stress}}$
$=\frac{1}{\frac{\text{volumetric stress}}{\text{volumetric strain}}}=\frac{1}{\text{bulk modulus}}$

$\therefore \text{slope}=\text{compressibility}$

Hence, $\left(D\right)$ is the correct answer.