CBSE Class 9
Free courses
Science
Motion, Force & Work
Lesson 1 of 10 • 58 upvotes • 2:21mins
This lesson explains what all topics will be covered in the entire course and how the course will help them score better.
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