The Total solution for NCERT class 6-12
(a) Young’smodulus of the material (Y) is given byY =Stress/Strain=150 x 106/0.002150 x 106/2 x 10-3=75 x 109 Nm-2=75 x 1010 Nm-2(a)Yield strength of a material is defined as the maximum stress it cansustain. From graph, the approximate yield strength of the given material= 300 x 106 Nm-2= 3 x 108 Nm-2 .