This set of Class 11 Physics Chapter 9 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
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
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
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.
Sanfoundry Global Education & Learning Series – Physics – Class 11.
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