Answer: a straight line.
- A a straight line
- B a curved parabola
- C a closed circle
- D an open hyperbola
Correct answer: A. a straight line
Explanation: Hooke’s law makes stress proportional to strain, giving a straight line through the origin.
A typical stress-strain curve: the initial straight line (Hooke's Law region, slope = Young's modulus) ends at the elastic limit; beyond the yield point, deformation becomes permanent, peaking at the ultimate tensile strength before the wire finally fractures.
Concept context
Stress, strain, Hookes law, and the elastic moduli that describe how solids deform and recover under load.