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The Yield strength of a structural steel is 2.5 x 10^8 N/m^2 . A steel rod of length 80cm and radius R = 9.5 mm is fixed in a vise and a force of magnitude 90 kN is applied perpendicular to its end face, the rod undergoes (a) Permanent deformation (b) Elongates in the elastic limit (c) No change (d) Diameter reduces to half

The Yield strength of a structural steel is 2.5 x 10^8 N/m^2 . A steel rod of length 80cm and radius R = 9.5 mm is fixed in a vise and a force of magnitude 90 kN is applied perpendicular to its end face, the rod undergoes 
 
(a) Permanent deformation 
(b) Elongates in the elastic limit 
(c) No change 
(d) Diameter reduces to half

Grade:12

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