NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Mechanical Properties of Solids
NEET · Physics · Mechanical Properties of Solids
Consider the following statements about stress and strain: (i)...
Consider the following statements about stress and strain:
(i) Stress is defined as restoring force per unit area.
(ii) Strain is the ratio of change in dimension to the original dimension.
(iii) Stress has units of (\mathrm{N} / \mathrm{m}^2) while strain is dimensionless.
(iv) Hooke's law states that stress (\propto) strain, valid beyond elastic limit.
Which of the above are correct?
Options
- A(i), (ii), (iii) only
- B(i) and (iv) only
- C(ii), (iii), (iv) only
- D(i), (ii), (iii), (iv)
Correct answer
A. (i), (ii), (iii) only
Step-by-step solution
Hooke's law is valid only up to elastic limit, not beyond.