Hooke’s Law - Mechanical Properties of Solids Questions and Answers

This set of Physics Multiple Choice Questions & Answers (MCQs) focuses on “Hooke’s Law”.

1. Hooke’s law states that _________
a) stress is always proportional to strain
b) stress is proportional to strain before ultimate tensile strength
c) stress is proportional to strain under elastic limit
d) stress and strain are never directly proportional
View Answer

Answer: c
Explanation: Hooke’s law states that when deformation is small, stress is proportional to strain for almost all materials. The region where this law is followed is said to be under elastic limit.

2. Hooke’s law is an empirical law. True or False?
a) True
b) False
View Answer

Answer: a
Explanation: An empirical law is one which is induced from observation or experiment. Hooke’s law is based on observations and is not derived from theoretical concepts.

3. All materials follow hooke’s law in its initial stages. True or False?
a) True
b) False
View Answer

Answer: b
Explanation: Hooke’s law states that stress is proportional to strain under elastic limit. There are a few materials like elastomers which don’t follow hooke’s law. There are very few examples like these in nature.

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