CBSE Class 9
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Science
Motion, Force & Work
Lesson 2 of 10 • 48 upvotes • 11:10mins
This lesson explains what is sound, how is sound propagated and also explains the Bell jar experiment which proves that sound cannot travel in vaccum.
10 lessons • 1h 47m
Overview of the Course
2:21mins
Understanding Sound with Bell Jar Experiment
11:10mins
Longitudinal and Transverse Waves
10:19mins
Sound Waves and its Characteristics
12:54mins
Reflection of Sound
14:11mins
Echo
12:35mins
Reverberation
10:37mins
Ultrasound
12:21mins
SONAR
10:40mins
The Human Ear
10:07mins