Question

Assertion: Young's modulus, Shear modulus and Bulk modulus are used to describe the elastic behaviour of objects as they respond to deforming forces that act on them. Reason: Young's modulus and Shear modulus are relevant only for solids. Bulk modulus is relevant for solids, liquid, and gases.

When a spiral spring is stretched by suspending a load on it, the strain produced is called

Assertion: Bulk modulus of elasticity (K) represents incompressibility of the material. Reason: Bulk modulus of elasticity is proportional to change in pressure.

Assertion: The stretching of a coil is determined by its shear modulus. Reason: Shear modulus change only shape of a body keeping its dimensions unchanged.