Question

The property of the material due to which it regains its original shape or size when the load is removed is called:
1. Elasticity
2. Viscosity
3. Plasticity
4. None of these

Answer 1

Correct Answer - Option 1 : Elasticity

CONCEPT:

Elasticity:

• When an external force is applied to a rigid body there is a change in its length, volume (or) shape. When external forces are removed the body tends to regain its original shape and size.

• Such a property of a body by virtue of which a body tends to regain its original shape (or) size when external forces are removed is called elasticity.

Plasticity:

• Plasticity is the ability of a material to undergo permanent deformation.

​Viscosity:

• The viscosity of a fluid is a measure of its resistance to deformation at a given rate.
• Viscosity describes a fluid’s resistance to flow.

​EXPLANATION:

• Elasticity is defined as the property of a body by virtue of which a body tends to regain its original shape (or) size when external forces are removed.
• Hence, option 1 is correct.