7 Stress strain curve for two wires of material A and B are as shown in Fig.
(a) Which material is more ductile?
(b) Which material has greater value of young modulus?
(c) Which of the two is stronger material?
(d) Which material is more brittle?
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Explanation:
a Wire with larger plastic region is more ductile material A.b Young's modulus is stress/strain∴ YA > YB c For given strain larger stress is required for A than that for B. ∴ A is stronger than B.d Material with smaller plastic region is more brittle therefore B is more brittle than A.
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