JEE Main 2024 — Mechanical Properties of Solids Question with Solution
JEE Main 2024 (27 Jan Shift 2)
Question
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 :
Choose an option
Show full solutionCorrect option: C
Step-by-step explanation
Elasticity is the ability of a material to deform under stress and then return to its original shape when the stress is removed.
The restoring force in elastic materials is associated with the inter-atomic or inter-molecular forces that act to bring the atoms or molecules back to their original positions when the material is deformed. When an external force is applied to a material, it causes a displacement of atoms or molecules from their equilibrium positions. The restoring force is a result of the potential energy stored in these inter-atomic or inter-molecular bonds, and it works to bring the material back to its original state.
Hence, both (A) and (R) are true and (R) is the correct explanation (A)
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This is a previous-year question from JEE Main 2024, covering the Mechanical Properties of Solids chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.