Question

The elastic after effect shows that the

• A. strain in a material is lagging behind stress.
• B. strain produced is quick.
• C. elasticity of the material vanishes.
• D. stress is developed very slowly.

Answer 1

The correct option is A strain in a material is lagging behind stress.

When a deformation force is applied we find that elastic bodies return to their original state immediately, while a few others take some time to recover. This time-lag is called the elastic-after effect.

Example:

In glass, if we keep applying stress rapidly, the strain is smaller. Thus, due to elastic after effect strain remains present or lag behind the stress applied.