Q.
The figure shows the stress-strain graph of a certain substance. Over which region of the graph is Hook’s Law obeyed ?
A) BC
B) CD
C) AB
D) OD
Explanation
(d) For Hook’s law, stress $\propto strain\ ie$, the graph between stress and strain is a straight line, which is so for portion $O\ to\ D.$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.