Answer:
Elasticity modulus or modulus of elasticity may be defined as the quantity that measures the object of the resistance that can be deformed elasticity. The stress- strain curve slop gives the modulus of elasticity.
The stress has been applied on the steel rod and pulled in tension less than the yield strength. In this case the modulus of the elasticity can be calculated by dividing the axial stress by the axial strain. Simple, the formula to calculate modulus of elasticity is stress/ strain.