Physics
Physics
Problem
20 Which row best defines elastic and plastic behaviour of a material?| elastic behaviour of a material | plastic behaviour of a material | |
|---|---|---|
| A | extends only within the limit of proportionality | extends beyond the limit of proportionality |
| B | has a linear force-extension curve | has a horizontal force-extension curve |
| C | obeys Hooke's Law | extends continuously under a steady load |
| D | returns to its original shape and size | suffers permanent deformation |