What is the modulus of elasticity?
a) Ratio of elongation of a material to the original length
b) It is defined as the ratio of stress (force per unit area) along an axis to strain (ratio of deformation over initial length) along that axis
c) It is force per unit area and can be expressed as the ratio of the applied force and the cross-sectional area
d) It tends to compress or shorten the material
e) none of them