A wire is pulled by equal forces at its ends. Its stress-strain ( x ) graph is shown; B is the elastic limit. Match Column I with Column II. Column I Column II (A) x

Question

A wire is pulled by equal forces at its ends. Its stress-strain ( $x$ ) graph is shown; B is the elastic limit. Match Column I with Column II.

Column I	Column II
(A) $x < x_{1}$	(P) There is permanent deformation
(B) $x_{1} < x < x_{2}$	(Q) Hooke's law is valid
(C) $x_{2} < x < x_{3}$	(R) There is no permanent deformation
(D) $x > x_{3}$	(S) The wire breaks

TestHub · Accepted Answer

Below x 1 ​ , Hooke's law holds and recovery is complete. Between x 1 ​ , x 2 ​ , recovery is complete but response is nonlinear. Beyond x 2 ​ , permanent deformation remains. Beyond x 3 ​ , the wire breaks.

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