Last Updated on June 2, 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 13 Oscillations. It is a part of Assertion Reason Questions for CBSE Class 11 Physics Series.
| Chapter | Oscillations |
| 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 Oscillations
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): The motion of a simple pendulum is simple harmonic for small angles.
Reason (R): For small angles, $\sin \theta \approx \theta$.
Answer: Option (a) is correct.
Explanation: The approximation $\sin \theta \approx \theta$ (in radians) reduces the equation of motion of a pendulum to that of SHM. So both $A$ and $R$ are true, and $R$ explains $A$.
Difficulty Level: Moderate
Q2. Assertion (A): The time period of a simple pendulum depends on its amplitude.
Reason (R): In SHM, time period is independent of amplitude.
Answer: Option (d) is correct.
Explanation: Time period of a simple pendulum (in SHM approximation) is independent of amplitude for small oscillations. A is false but R is true.
Difficulty Level: Tough
Q3. Assertion (A): In SHM, restoring force is always proportional to displacement.
Reason (R): The restoring force in SHM is given by $F=-k x$.
Answer: Option (a) is correct.
Explanation: The defining characteristic of SHM is that restoring force $F$ is proportional and opposite to displacement $x$. R explains A.
Difficulty Level: Moderate
Q4. Assertion (A): The total energy in SHM remains constant.
Reason (R): In SHM, potential energy is maximum at the equilibrium position.
Answer: Option (c) is correct.
Explanation: Total energy is constant in SHM, but potential energy is minimum (not maximum) at the equilibrium position.
Difficulty Level: Moderate
Q5. Assertion (A): A body executing SHM passes through its mean position with maximum velocity.
Reason (R): Kinetic energy is maximum at maximum displacement.
Answer: Option (c) is correct.
Explanation: Velocity and kinetic energy are maximum at the mean position, not at maximum displacement. So A is true, but R is false.
Difficulty Level: Tough
Also check
- Waves Class 11 Assertion Reason Questions Physics Chapter 14
- Oscillations Class 11 Assertion Reason Questions Physics Chapter 13
- Kinetic Theory Class 11 Assertion Reason Questions Physics Chapter 12
- Thermodynamics Class 11 Assertion Reason Questions Physics Chapter 11
- Thermal Properties of Matter Class 11 Assertion Reason Questions Physics Chapter 10
- Mechanical Properties of Fluids Class 11 Assertion Reason Questions Physics Chapter 9
- 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
- Periodic and oscillatory motion
- Simple harmonic motion (SHM)
- Energy in SHM and damping
Simple harmonic motion is the foundation for understanding waves, sound, and even atomic behavior.
Assertion reason questions from the above given topic may be asked.
Frequently Asked Questions (FAQs) on Oscillations Assertion Reason Questions Class 11
Q1: What is the importance of Oscillations 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 Oscillations?
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 Oscillations?
A5: Visit xamcontent.com and physicsgurukul.com for chapterwise assertion reason question collections.
