Elastic Behaviour, Stress & Strain
The stress-strain curves are drawn for two different materials X and Y. It is observed that the ultimate strength point and the fracture point are close to each other for material X but are far apart for material Y.
We can say that materials X and Y are likely to be (respectively),
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Answer: (c)
- Brittle material: fracture occurs soon after the ultimate strength point, so the two points are close (X).
- Ductile material: large plastic deformation between ultimate strength and fracture, so the points are far apart (Y).
- So the answer is (c) brittle and ductile.