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Class 9 Science Sound Chapter 12 Class 9 Science Explanation in Hindi, Imp Questions and Answers. NCERT Class 9 Chemistry Chapter 12 Explanation and Question Answers. For Class 9 Science Notes, please visit https://www.successcds.net/Class9/sci...

Science Lessons of Class 9 Physics, Chemistry and Biology can be seen here    • NCERT Class 9 Science Lessons Video Lectur...  

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Class 9 Science Chapter 12 Sound - Notes can be seen here https://www.successcds.net/Class9/sci... - Explanation in Hindi, Important Question Answers, NCERT Solutions.

The topics covered in the video are as follows -

Introduction
Echo
Wave and it’s types
Audible and inaudible sound
Characteristics of sound
Ultrasound and it’s applications
Sound needs a medium to travel
Speed of sound
Human ear
Sonic boom
NCERT Book solutions
Reflection of sound and it’s application


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CBSE Class 9 Science Sound, Chemistry Lesson Question Answers and NCERT Solutions

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