Define strain.

Define Substrate.

Define Stroma.

Tensile strain is defined as

Define stress and strain. What are their different types?

What is shearing strain?

Shearing strain is expressed by

A steel cylindrical rod of length l and radius r is suspended by its end from the ceiling. (a) Find the elastic deformation energy U of the rod. (b) Define U in terms of tensile strain Deltal//l of the rod.

Within the elastic limit, the ratio of shear stress and shearing strain is called

Define Elastic body. Define Elastic.

Define plastic body. Define Plasticity.