The ratio of tensile stress to the corresponding strain is a constant and this ratio is known as ____.

Shear Modulus: The ratio of shear stress to the corresponding shear strain within the elastic limit is known as Modulus of Rigidity or Shear Modulus. This is denoted by C or G or N.

\(\rm{\therefore C\left( {or\;G\;or\;N} \right) = \frac{{Shear\;stress}}{{Shear\;strain}} = \frac{\tau }{\phi }}\)

Elastic Modulus: The ratio of tensile stress or compressive stress to the corresponding strain is constant. This ratio is known as Young’s Modulus or Modulus of Elasticity and is denoted by E.

\(\rm{\therefore E = \frac{{Tensile\;stress}}{{Tensile\;strain}}\;or\;\frac{{Compressive\;stress}}{{Compressive\;strain}}}\) Or \(E = \frac{\sigma }{e}\)