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NEETPhysicsMechanical Properties of Solids

Assertion (A): Elastomers possess a very high elastic limit. Reason (R): Elastomers can be stretched to large deformations and still return to their original shape when the deforming force is removed.

Options

  1. ABoth A and R are true and R is the correct explanation of A.
  2. BBoth A and R are true but R is not the correct explanation of A.
  3. C(A ) is true but (R ) is false.
  4. DA is false but R is true.

Correct answer

A. Both A and R are true and R is the correct explanation of A.

Step-by-step solution

Elastomers are materials like rubber that can be stretched to a very large extent without permanent deformation. This property is due to their molecular structure, allowing them to recover their original shape after the deforming force is removed, which is exactly what a high elastic limit implies. Therefore, both the Assertion (A) and Reason (R) are true, and Reason (R) correctly explains why elastomers have a high elastic limit.

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