A steel has its yield strength of 200N/mm² and modulus of elasticity of 1x10⁵MPa. Assuming the material to obey hookes law up to yielding, what will be its proof resilience?

A steel has its yield strength of 200N/mm² and modulus of elasticity

1.	A steel has its yield strength of 200N/mm² and modulus of elasticity of 1x10⁵MPa. Assuming the material to obey hookes law up to yielding, what will be its proof resilience?
A.	0.8 N/mm²
B.	0.4 N/mm²
C.	0.2 N/mm²
D.	0.6 N/mm²
Answer» D. 0.6 N/mm²