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Lakhmir Singh Physics Class 9 Solutions Chapter 5 - Sound

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VSAT 2023

Lakhmir Singh Class 9 Physics Solutions Chapter 5 - Sound - Free PDF Download

Vedantu.com - No.1 online tutoring company in India provides you the Free PDF download of Lakhmir Singh Physics Class 9 Solutions Chapter 5 - Sound solved by Expert Teachers. The textbook solutions is to help students to complete their homework and prepare to Score More marks in their exams. Register Online for Class 9 Science tuition on Vedantu.com to score more marks in your examination. Vedantu is a platform that provides free CBSE Solutions (NCERT) and other study materials for students. Maths Students who are looking for the better solutions ,they can download Class 9 Maths NCERT Solutions to help you to revise complete syllabus and score more marks in your examinations.

Last updated date: 31st May 2023
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Class 9 Lakhmir Singh Physics Solutions Chapter 5

The fifth chapter ‘Sound’ incorporates a wide record of sound waves, their creation, and their propagation. Sound energy is the type of energy on account of which we can hear. It goes as longitudinal waves where the particles of the medium vibrate in a uni-course where the waves are moving. Other examples of longitudinal waves are the water waves formed on the water surface in a lake or the waves that move alongside a spring when it is pushed toward one side.

The chapter further explains the connection between speed, recurrence, and frequency of a wave. For instance, the vibration of two vocal strings in our throat or the vibration of a drum membrane delivers a sound that propagates through the layers of air and arrives at our ear. Sound waves are mechanical waves since they require a material mode for their propagation. Sound waves can't go through the vacuum or free space. Hence the astronauts convey through remote sets using radio waves on the outer surface of the moon.

This chapter teaches different uses of ultrasound in various fields and the idea of Sonar. The attributes of sound include loudness, pitch, and quality. Development of the human ear and its working are the concluding concepts of the chapter.

Topics covered in the Chapter

  • What are the sound waves?

  • How sound is produced?

  • Does sound travel?

  • What sources does sound use to travel?

  • What is the wavelength and what causes it?

  • Laws of Reflection of sound 

  • What is reverberation?

  • What is compression?

  • All about the intensity of sound 

  • Types of sound waves

Vedantu’s Lakhmir Singh Class 9 Physics Solutions for Chapter 5 is a truly essential study material that students must make use of. From detailed explanations to excellent questions - it has everything a student requires to ace their performance in the subject. 


FAQs on Lakhmir Singh Physics Class 9 Solutions Chapter 5 - Sound

1. How are Lakhmir Singh Class 9 Physics solutions useful for students?

The chapters in Lakhmir Singh's Solutions depend on the CBSE board. The reason why students select Lakhmir Singh answers is that the points are clarified with the help of models and problems which allow them the opportunity to practice and apply the formulas. The whole textbook is divided into sets like the explanation of the chapters, practice questions, and multiple-choice questions toward the end of every section. These aspects make Lakhmir Singh’s books more useful and reliable for students. 

2. Why should I refer to Lakhmir Singh's book for Physics?

There are various benefits in referring to Lakhmir Singh’s physics book for class 9. First and foremost,  Lakhmir Singh's Class 9 physics book covers the whole syllabus and you can get it online from Vedantu for free. In addition, It has a wide assortment of questions that explain all concepts and topics. The specialists have broad teaching experience and hence, have made solutions according to an exam perspective and proceed to refresh and reconsider their answers following the changes.

3. Why refer to Vedantu’s Lakhmir Singh Solutions for Class 9 Physics?

Vedantu makes progress toward a superior learning stage for students of various grades. They are focused on offering you error-free solutions and study materials to explain every one of their concepts and questions related to a specific topic. Furthermore, Lakhmir Singh Solutions for Class 9 physical science are planned by experts, making these answers accurate and mistake-free. They have shrouded every point inside and out in a basic and easy format. In an attempt to get a good score, we enthusiastically suggest you take our Lakhmir Singh answers for Class 9 physics.


4. What sets of questions are available in Lakhmir Singh textbooks to explain Class 9 Physics?

Different sets of questions are provided for students to understand the concepts and then solve them. A few sets of questions include filling in the blanks, answering in one word. These are the basic sets. The average set includes solutions, numerical and short answers. However, there are more advanced level questions that ask students to explain a particular situation, solve the formulas, explain the terminologies and write detailed answers. There are also a few questions that ask to provide brief answers or explanations for the topics.

5. What does chapter 5- Sound of Physics Class 9 explain?

Concepts covered in Chapter 5 of Physics Class 9 are all related to Sound. It starts by explaining the Characteristics of a Sound Wave, Echoes, Human Ear and Production of Sound. Later on, the chapter teaches the topics and importance of Propagation of Sound, Range of Hearing in Humans, Reflection of Sound, Reverberation. Some other concepts are SONAR, Sound, Sound Need a Medium to Travel, Sound (Numerical) and Speed of Sound (Velocity of Sound). In the end, the chapter is explaining what ultrasound is and its importance.