steel bar 10 mm x 10 mm cross section is subjected to an axial tensile load of 20kN. If the length of bar is 1 m and E = 200 GPa, then elongation of the bar is:

steel bar 10 mm x 10 mm cross section is subjected to an axial tensile

1.	steel bar 10 mm x 10 mm cross section is subjected to an axial tensile load of 20kN. If the length of bar is 1 m and E = 200 GPa, then elongation of the bar is:
A.	1 mm
B.	0.5 mm
C.	0.75 mm
D.	1.5 mm
Answer» D. 1.5 mm