| Proof strength is defined as the stress which will produce a permanent extension of how much percentage in the gauge length of the standard test specimen.
Choose the correct option from below list
(1)0.1
(2)0.2
(3)0.3
(4)0.4
Answer:-(1)0.1
Note:-Proof strength is used in design of fasteners. It corresponds to 0.1% permanent deformation of gauge length. | | |