Question: What is the Poisson\'s ratio?

Options:

1. The ratio of lateral strain to axial strain
2. The ratio of axial strain to lateral strain
3. The ratio of stress to strain
4. The ratio of strain to stress

Correct Answer: The ratio of lateral strain to axial strain

Solution:

Poisson\'s ratio is defined as the ratio of lateral strain to axial strain in a material subjected to uniaxial stress.