Modulus of Rigidity is the elastic coefficient when a shear force is applied resulting in lateral deformation. It gives us a measure of how rigid a body is. And is denoted by G. Modulus of Rigidity is usually measured using the Megapascal for Pressure. Note that the value of Modulus of Rigidity is always positive. Typically, the value of Modulus of Rigidity is greater than 0.