Exam-style question
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If a material is stretched beyond its elastic limit, what type of deformation occurs?.
- A.Elastic deformation
- B.Plastic deformation
- C.Brittle fracture
- D.Elastic recovery
Model answer
What a good answer should say
- Plastic deformation
Explanation
Why this works
When a material is stretched beyond its elastic limit, it undergoes plastic deformation, meaning it will not return to its original shape after the force is removed. This is a key concept in material science and is illustrated in force-extension graphs.
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