Physics-Stress & Strain
NEET Physics Stress & Strain MCQ Question
Type: MCQ-conceptual-Hard-Class 11
Which combination of statements is correct regarding stress and strain in solids?
A
- Stress is defined as the restoring force per unit area. 2. Young's modulus applies only to solids and is relevant for tensile stress. 3. The bulk modulus is applicable to solids, liquids, and gases, referring to uniform volume change.
B
- Stress is a measure of the applied force only. 2. Hooke's law is valid for all types of materials. 3. Young's modulus can be applied to gases as well.
C
- Bulk modulus relates to shape change in solids. 2. Stress is calculated as force times area. 3. Young's modulus is the ratio of tensile stress to strain.
D
- Stress can only be calculated in the linear region of the stress-strain curve. 2. Bulk modulus is only relevant for liquids. 3. Young's modulus is used for calculating compressibility.
Correct Answer
Option A
Detailed Explanation
Statement 1 is correct as stress is defined as the restoring force per unit area. Statement 2 is accurate since Young's modulus applies only to solids related to tensile stress. Statement 3 is true as the bulk modulus is applicable to solids, liquids, and gases, indicating uniform volume change under stress.
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