Last Updated on April 24, 2025 by XAM CONTENT
Hello students, we are providing assertion reason questions for class 11. Assertion Reason questions are the new question format that is introduced in CBSE board. The resources for assertion reason questions are very less. So, to help students we have created chapterwise assertion reason questions for class 11 Physics. In this article, you will find assertion reason questions for CBSE Class 11 Physics Chapter 8 Mechanical Properties of Solids. It is a part of Assertion Reason Questions for CBSE Class 11 Physics Series.
| Chapter | Mechanical Properties of Solids |
| Type of Questions | Assertion Reason Questions |
| Nature of Questions | Competency Based Questions |
| Board | CBSE |
| Class | 11 |
| Subject | Physics |
| Useful for | Class 11 Studying Students |
| Answers provided | Yes |
| Difficulty level | Mentioned |
| Important Link | Class 11 Physics Chapterwise Assertion Reason |
Assertion Reason Questions on Mechanical Properties of Solids
Assertion Reason Questions
Directions:
Each of the following questions consists of two statements: an Assertion (A) and a Reason (R). Answer them by selecting the correct option:
(a) Both Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation of Assertion (A).
(b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
(c) Assertion (A) is true, but Reason (R) is false.
(d) Assertion (A) is false, but Reason (R) is true.
Q1. Assertion (A): Stress is directly proportional to strain in the elastic limit.
Reason (R): Hooke’s Law is valid beyond the elastic limit of a material.
Answer: (c) Assertion is true, but Reason is false.
Difficulty Level: Moderate
Q2. Assertion (A): The Young’s modulus of a perfectly rigid body is infinite.
Reason (R): A rigid body does not undergo any strain even under large stress.
Answer: (a) Both A and R are true, and R is the correct explanation of A.
Difficulty Level: Moderate
Q3. Assertion (A): The breaking stress of a wire depends on its length.
Reason (R): Breaking stress is a material property independent of geometry.
Answer: (d) Assertion is false, but Reason is true.
Difficulty Level: Tough
Q4. Assertion (A): The restoring force per unit area in a deformed solid is called strain.
Reason (R): Strain is a dimensionless quantity.
Answer: (c) Assertion is false, but Reason is true.
Difficulty Level: Moderate
Q5. Assertion (A): A rubber band can be stretched easily but it doesn’t obey Hooke’s law over large deformations.
Reason (R): Elastic behavior of rubber is nonlinear.
Answer: (b) Both A and R are true, but R is not the correct explanation of A.
Difficulty Level: Tough
Also check
- Mechanical Properties of Solids Class 11 Assertion Reason Questions Physics Chapter 8
- Gravitation Class 11 Assertion Reason Questions Physics Chapter 7
- System of Particles and Rotational Motion Class 11 Assertion Reason Questions Physics Chapter 6
- Work, Energy, and Power Class 11 Assertion Reason Questions Physics Chapter 5
- Laws of Motion Class 11 Assertion Reason Questions Physics Chapter 4
- Motion in a Plane Class 11 Assertion Reason Questions Physics Chapter 3
- Motion in a Straight Line Class 11 Assertion Reason Questions Physics Chapter 3
- Units and Measurements Class 11 Assertion Reason Questions Physics Chapter 2
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Topics from which assertion reason questions may be asked
- Elastic behavior and stress-strain relationship
- Hooke’s law and Young’s modulus
- Shear modulus and bulk modulus
Stress and strain are foundational in designing stable structures like bridges and skyscrapers.
Assertion reason questions from the above given topic may be asked.
Frequently Asked Questions (FAQs) on Mechanical Properties of Solids Assertion Reason Questions Class 11
Q1: What is the importance of Mechanical Properties of Solids in Class 11 Physics?
A1: It forms the basis for various real-life applications and is crucial for JEE/NEET level conceptual clarity.
Q2: Are assertion reason questions asked in CBSE exams?
A2: Yes, CBSE has introduced competency-based formats which include assertion reason questions to test conceptual understanding.
Q3: How to prepare assertion reason questions from Mechanical Properties of Solids?
A3: Focus on key definitions, cause-effect relationships, and conceptual reasoning instead of just memorizing facts.
Q4: Can numerical topics appear in assertion reason format?
A4: Yes, concepts from numerical topics like laws, formulas, or effects of parameter change are often asked.
Q5: Where can I find more assertion reason questions on Mechanical Properties of Solids?
A5: Visit xamcontent.com and physicsgurukul.com for chapterwise assertion reason question collections.
