Question

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R)
Assertion (A) : The property of body, by virtue of which it tends to regain its original shape when the external force is removed, is Elasticity.
Reason (R) : The restoring force depends upon the bonded inter atomic and inter molecular force of solid.
In the light of the above statements, choose the correct answer from the options given below :

• A. (A) is false but (R) is true
• B. (A) is true but (R) is false
• C. Both (A) and (R) are true and (R) is the correct explanation (A)
• D. Both (A) and (R) are true but (R) is not the correct explanation of (A)

Answer 1

The Correct Option is C

This question necessitates an assessment of statements concerning the physical concept of elasticity. Both the assertion and the reason will be meticulously examined.

1. Assertion Analysis (A):
   • Statement: "Elasticity is the property of a body that enables it to revert to its original shape upon the removal of an external force."
   • This statement is factually correct. Elasticity describes the material characteristic of returning to its initial form after deforming forces cease.
2. Reason Analysis (R):
   • Statement: "The restoring force is contingent upon the interatomic and intermolecular forces within a solid."
   • This statement is also accurate. The restorative force responsible for elasticity is indeed governed by internal interatomic and intermolecular forces, which act to reinstate the original configuration of the material after external forces are withdrawn.
3. Relationship Evaluation:
   • Both statements (A) and (R) are true. Statement (R) accurately explains statement (A).
   • The elasticity exhibited by a material is a direct consequence of the internal forces (interatomic and intermolecular) that facilitate its return to its original shape when the deforming force is removed.

Consequently, the correct conclusion is: Both (A) and (R) are true, and (R) provides the correct explanation for (A).