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Young's Modulus of Elasticity

The materials...

Question

The materials, which do not show a fixed trend of deformation vs. applied force, are called:

A

inelastic materials

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B

plastic materials

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C

elastic materials

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D

rigid materials

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Solution

The correct option is D inelastic materials
Elastic materials are those that follow the Hooke's law, which is that the deformation produced in a material is directly proportional to the stress applied to it, and the material is recoverable after the deformation force is removed.
Inelastic materials are those that do not follow this relationship. They do not show a fixed trend of deformation vs applied force; in fact, they might not deform at all (rigid materials) or the deformation observed is not completely recoverable.

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