Following figure shows the strain-stress curve for a given material. What is Young's modulus for this material?

Elasticity is the property of a body by which it regains its original state on the removal of the deforming force. The figure given below shows the stress-strain curve for a given material. What are the Youngs modulus and approximate yield strength for this material?

The stress required to double the length of a wire of Young's modulus Y is

A wire of length L and area of cross-section A is stretched through a distance x metre by applying a force F along length, then the work done in this process is : (Y is Young's modulus of the material)

Find stress required to double the length of a wire of Young's modulus Y.