Section: Solid Mechanics | Marks: 1
The engineering stress (π) vs. engineering strain (π) curve obtained by conducting uniaxial tension test on a steel specimen is shown in the figure (the sketched curve is not to the scale). The specimen exhibits cup-and-cone failure within its gage length. Which point on the curve corresponds to the beginning of necking in the test specimen?

- A. P
- B. Q
- C. R
- D. S
Answer: D. S