NCERT Solutions for Class 11 Physics Chapter 9 Mechanical Properties of Solids - Gurukul of Excellence (2023)

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Here we are providing Latest NCERT Solutions for Class 11 Physics. In this article, we are covering NCERT Solutions for Class 11 Physics Chapter 9 Mechanical Properties of Solids. Students are suggested to go through each question to understand the concept well.

Class 11 Physics Chapter 9 Mechanical Properties of Solids

Chapter 9 of NCERT Class 11 Physics textbook, titled “Mechanical Properties of Solids,” discusses the different mechanical properties of solids and their applications. The chapter starts by introducing the concept of stress, strain, and elastic modulus and their relations.

The chapter then explores the different types of stress, such as tensile, compressive, and shear stress, and their effects on solids. It also discusses the different types of strain, such as longitudinal and lateral strain, and their relation to the elastic modulus.

Furthermore, the chapter explains the concept of the Hooke’s law, which states that the stress is proportional to the strain, within the elastic limit of the solid. It also discusses the different types of elastic modulus, such as Young’s modulus, shear modulus, and bulk modulus, and their applications in various fields.

Moreover, the chapter explains the different types of plastic deformation, such as ductile and brittle deformation, and their effects on solids. It also discusses the concept of fracture and the different types of fractures, such as brittle, ductile, and fatigue fractures.

Chapters Covered in Class 11 Physics

Chapter 1: Physical World
Chapter 2: Units and Measurements
Chapter 3: Motion in a Straight Line
Chapter 4: Motion in a Plane
Chapter 5: Laws of Motion
Chapter 6: Work, Energy, and Power
Chapter 7: System of Particles and Rotational Motion
Chapter 8: Gravitation
Chapter 9: Mechanical Properties of Solids
Chapter 10: Mechanical Properties of Fluids
Chapter 11: Thermal Properties of Matter
Chapter 12: Thermodynamics
Chapter 13: Kinetic Theory
Chapter 14: Oscillations
Chapter 15: Waves

NCERT Class 11 Physics Textbook Chapters

NCERT Class 11 Physics textbook covers the fundamental concepts of physics and their applications in various fields. The textbook is divided into 15 chapters, each covering a specific topic related to physics.

1. Physical World: Introduces the concept of physics and its relation to other sciences.
2. Units and Measurements: Covers the fundamental units of measurements and various measuring instruments.
3. Motion in a Straight Line: Discusses the motion of an object in a straight line and its various aspects.
4. Motion in a Plane: Deals with the motion of an object in a plane and its various aspects.
5. Laws of Motion: Covers Newton’s laws of motion and their applications.
6. Work, Energy and Power: Discusses the concepts of work, energy, and power and their applications.
7. System of Particles and Rotational Motion: Discusses the rotational motion of an object and its various aspects.
8. Gravitation: Covers the concept of gravitation and its applications.
9. Mechanical Properties of Solids: Discusses the mechanical properties of solids and their applications.
10. Mechanical Properties of Fluids: Deals with the mechanical properties of fluids and their applications.
11. Thermal Properties of Matter: Covers the thermal properties of matter and their applications.
12. Thermodynamics: Discusses the laws of thermodynamics and their applications.
13. Kinetic Theory: Deals with the kinetic theory of gases and its applications.
14. Oscillations: Discusses the concept of oscillations and their applications.
15. Waves: Covers the concept of waves and their applications in various fields.

Importance of NCERT Solutions for Class 11 Physics

NCERT (National Council of Educational Research and Training) solutions for class 11 physics are highly important as they provide a comprehensive and accurate solution to the questions and problems given in the NCERT textbooks. Here are some reasons why NCERT solutions for class 11 physics are important:

1. Designed by Experts: The NCERT solutions for class 11 physics are designed by subject matter experts who have years of experience in teaching and designing study materials. Therefore, the solutions are accurate, reliable, and easy to understand.
2. Follows NCERT Guidelines: The NCERT solutions for class 11 physics strictly follow the guidelines set by the NCERT board, ensuring that students receive a high-quality and standard education.
3. Provides Clarity of Concepts: The NCERT solutions for class 11 physics provide a step-by-step explanation of each problem, helping students to understand the concepts clearly.
4. Helps in Exam Preparation: NCERT solutions for class 11 physics provide students with a clear idea about the types of questions that can be asked in exams, helping them to prepare effectively for their exams.
5. Builds Strong Foundation: The NCERT solutions for class 11 physics help in building a strong foundation for further studies in physics, as they cover all the fundamental concepts in the subject.

Overall, NCERT solutions for class 11 physics are an essential tool for students as they help in understanding the subject better and perform well in their exams.

Why Students Find it Difficult to Solve NCERT Exercises in Class 11 Physics?

Students may find it difficult to solve NCERT (National Council of Educational Research and Training) exercises in class 11 physics due to the following reasons:

1. Lack of Clarity: Students may not have a clear understanding of the concepts and theories covered in the chapter, making it difficult for them to solve the problems.
2. Insufficient Practice: Physics is a subject that requires a lot of practice to master. Students who do not practice regularly may find it difficult to solve the problems in the exercises.
3. Inability to Apply Concepts: Students may have a good understanding of the theory, but may struggle to apply it to solve problems. This is because physics problems often require the application of multiple concepts and formulas.
4. Lack of Time Management: Students may struggle to manage their time effectively when solving the exercises. This can lead to rushing through problems, making careless mistakes, and not completing the exercises on time.
5. Fear of Math: Physics problems often involve complex calculations and students who are not comfortable with math may find it difficult to solve the numerical problems.
6. Limited Availability of Guidance: Students may not have access to adequate guidance and resources to help them solve the exercises.

To overcome these challenges, students can practice regularly, seek guidance from their teachers, work on building their conceptual understanding, and focus on improving their problem-solving skills. It is also important for students to manage their time effectively and break down complex problems into smaller parts to make them more manageable.

How to Solve NCERT Exercise for Class 11 Physics?

Here are the steps you can follow to solve the NCERT exercise for class 11 physics:

1. Read the Textbook: Before attempting the exercises, it is important to read the related chapters from the NCERT textbook thoroughly. This will give you a better understanding of the concepts and help you solve the problems more effectively.
2. Identify the Types of Questions: Identify the types of questions that are being asked in the exercise. There can be multiple-choice questions, short answer questions, numerical problems, and long answer questions. This will help you to plan your approach to solve the problems.
3. Understand the Problem: Read each problem carefully and try to understand what is being asked. Identify the given data and what needs to be calculated. It is important to understand the problem statement clearly before attempting to solve it.
4. Plan Your Approach: After understanding the problem, plan your approach to solve it. Decide on the method and formulae that you will use to solve the problem. Draw diagrams and label the quantities involved.
5. Solve the Problem: Use the appropriate formulae and solve the problem step-by-step. Be careful with units and use the correct SI units for all quantities.
6. Check Your Answers: Once you have solved the problem, recheck your answers to ensure that you have not made any mistakes. Check your units and significant figures.
7. Practice Regularly: The key to solving NCERT exercises for class 11 physics is regular practice. Make a habit of solving a few exercises every day to improve your problem-solving skills.

By following these steps, you can effectively solve the NCERT exercise for class 11 physics and prepare for your exams.