CBSE Class 9
Free courses
Science
Motion, Force & Work
Lesson 3 of 10 • 9 upvotes • 7:58mins
Compression ,Rarefactions
10 lessons • 1h 23m
Overview
3:22mins
Production of Sound
5:20mins
Propagation of Sound
7:58mins
Longitudinal Waves
9:46mins
Pitch
10:50mins
Reflection of Sound
9:40mins
Range of Hearing
Structure of the Human Ear
8:20mins
Short Answer Question
9:35mins
Numerical Problems
8:45mins