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

The question requires evaluating the statements related to the concept of elasticity in physics. Let’s analyze both the assertion and the reason carefully. 

1. Understanding the Assertion (A):
   • The assertion states: "The property of a body, by virtue of which it tends to regain its original shape when the external force is removed, is Elasticity."
   • This statement is true. Elasticity is the physical property of materials where they return to their original shape after the deforming forces are removed. This is a fundamental characteristic of elastic materials.
2. Analyzing the Reason (R):
   • The reason states: "The restoring force depends upon the bonded inter atomic and inter molecular force of solid."
   • This statement is also true. The restoring force in a material, which leads to elasticity, indeed depends on the interatomic and intermolecular forces. These internal forces try to restore the structure back to its original shape once the external forces are withdrawn.
3. Evaluating the Relationship:
   • Both statements are true, and the reason (R) provides the correct explanation for the assertion (A).
   • The elasticity of a material is directly related to the internal forces (inter atomic and inter molecular forces) that act to return the material to its original shape after the deforming force is removed.

Based on the analysis, the correct option is: Both (A) and (R) are true and (R) is the correct explanation (A).

Answer 2

The assertion correctly defines the property of elasticity. The reason explains that the restoring force is a result of interatomic and intermolecular forces, which is true. However, while the reason is accurate, it does not necessarily explain the assertion in all contexts.
The Correct answer is: Both (A) and (R) are true and (R) is the correct explanation (A)