Answer is:
Linear strain
Explanation:
The deformation of the bar, per unit length in the direction of the force (i.e. δl/l) is known as primary strain or linear strain.
When a change in length takes place, the strain is known as linear strain.
The deformation of the bar per unit length in the direction of the force is known as linear strain.
The ratio of change in length to original length is called Linear strain.
Answer is:
Poisson's ratio
Explanation:
The ratio of lateral strain to linear strain is called Poisson's ratio.