Modulus of rigidity .

Modulus it rigidity of ideal liquids is

Modulus it rigidity of ideal liquids is

Young's modulus of rigid body is …….

Y,B, G represent respectively the young.s modulus, bulk modulus and rigidity modulus of a body. If rigidity modulus is twice the bulk modulus, then

The Young's modulus and rigidity modulus of a metal are 40 GPa and 20 GPa respectively. Then the bulk modulus is

If the Poissions ratio of a substance is 0.25 then the ratio of its Youngs modulus and rigidity modulus is

What is the correct relation between young's modulus (Y), modulus is rigidity (eta) and poisson ratio (sigma) ?