Question

Elasticity in the material is due to _______.
1. The change or effective radius of the molecules.
2. The change in intermolecular distance and restoring forces starts acting on the molecules.
3. The deforming forces acting on it.
Which option is true?

• A. 1 and 2
• B. 2 and 3
• C. 1, 2 and 3
• D. Only 2

Answer 1

Answer: (D)

Only 2

Elasticity property refers to ability of material to regain its original shape, after the external stress is removed. At molecular level, the external stress causes change in inter-molecular distance, resulting in restoring forces to act among the molecules, so that molecules can go back to their original position.