Hooke’s Law holds good up to
Limit of Proportionality
Explanation for the correct answer
Option (B)
Step 1: Hooke's law
Step 2: Diagram of Hooke's law
In the diagram, it is clear that Hooke's law holds good till the limit of proportionality, since , the point of proportionality is mentioned in point A on the diagram. At point A the ratio of stress and strain is constant, which satisfies Hooke's law.
Explanation for the incorrect answer
So, Hooke’s Law holds good up to the Limit of Proportionality. Option (B) is correct.