Question

Long answer type question.

Distinguish between Young’s modulus, bulk modulus, and modulus of rigidity.

Answer 1

	Young’s modulus	Bulk modulus	Modulus of rigidity
1.	It is the ratio of longitudinal stress to longitudinal strain.	It is the ratio of volume stress to volume strain.	It is the ratio of shearing stress to shearing strain.
2.	It is given by, Y = `"MgL"/(pi"r"^2l)`	It is given by, K = `"VdP"/"dV"`	It is given by, `eta = "F"/("A"theta)`
3.	It exists in solids.	It exists in solid, liquid and gases.	It exists in solids.
4.	It relates to change in the length of a body.	It relates to the change in volume of a body.	It relates to change in shape of a body.