Question

Choose the most elastic substance from the following options:
A.Rubber
B.Nylon
C.Steel
D.Iron

Answer 1

Hint: Basically, elasticity refers to the property of a solid material to return to their original shape and size after the forces which are deforming them have been removed. So, to solve this question we need to know about the properties of each substance that is given to us.

Complete step by step answer:
When an external force is applied to a rigid body then there is a change in its volume or shape and length and when these external forces are removed, then the body tends to regain its original shape and size. So, this property of a body by virtue of which it tends to regain its original shape or size when external forces are removed is known as elasticity.
Now, elastic bodies regain their original shape due to internal restoring forces and this internal force acting per unit area of the deformed body is further known as stress. We have three different types of stress. The first one is longitudinal stress, the second is Volume stress and the third is Tangential stress or it is also known as Shear stress.
Now, among the given options, Steel is the most elastic substance than any other thing because steel comes back to its original shape faster than rubber when the deforming forces are removed.

Hence, option C is correct.

Note: Steel is generally used in appliances, buildings, railways etc. Most of the large structures such as stadiums, bridges and airports are supported by a steel skeleton. Moreover, it is also used in a variety of other construction materials such as bolts, nails, screws and other household products and cooking utensils.