Physics · Elastic behaviour, stress-strain relationship, Hooke's Law
Assertion (A): Ductile metals are used to prepare thin wires. Reason (R) : In th
Assertion (A): Ductile metals are used to prepare thin wires. Reason (R) : In the stress-strain curve of ductile metals, the length between the points representing elastic limit and breaking point is very small.
- A. Both (A) and ( \( R \) ) are true and ( \( R \) ) is the correct explanation of (A)
- B. Both (A) and (R) are true and (R) is not correct explanation of (A)
- C. (A) is true but (R) is false.
- D. (A) is false but (R ) is true
Step-by-step solution
Ductile metals can be drawn into wires because they undergo large plastic deformation before breaking. The stress-strain curve for ductile metals shows a significant plastic region between the elastic limit and the breaking point, not a small one. Hence, assertion (A) is true but reason (R) is false.
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