For copper, the yield stress σy and the brittle fracture stress σf are related as:

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1. σf > σy
2. σy > σf
3. σf = σy
4. σf ≪ σy

Option 1 : σf > σy
Free
ST 1: Logical Reasoning
1699
20 Questions 20 Marks 20 Mins

Detailed Solution

Explanation:-

where,

Point 2 = proportional limit , Point 3 = yield point, Point 4 = ultimate tensile stress, Point 5 = fracture point, From the above diagram

It is clearly shown

Fracture stress (at point 5) > Yield Stress (at point 3)

Important Points

• Hooke’s Law states that the strain of the material is proportional to the applied stress within the elastic limit of that material.
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