NEET Physics Elastic Behavior Assertion Reason Question
Assertion (A): A solid body requires a force to change its shape or size.
Reason (R): Stress is the restoring force per unit area and strain is the fractional change in dimension.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false.
Correct Answer
Detailed Explanation
A is true because a force is needed to deform a solid. R is true as it defines stress and strain, but it does not directly explain why force is necessary to change a solid's shape or size.
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