CBSE Class 9
Free courses
Science
Motion, Force & Work
Lesson 1 of 6 • 8 upvotes • 14:08mins
Various methods of sound propagation Concept of frequency amplitude Wavelength Crest Trough Time period etc.
6 lessons • 1h 17m
Sound Production and Propagation (in Hindi)
14:08mins
Phenomenon for Reflection of Sound + Sonic Boom (in Hindi)
12:23mins
Applications of Ultrasound Waves (in Hindi)
12:03mins
Exercises 1 (in Hindi)
12:22mins
Exercises 2 (in Hindi)
12:05mins
Exercises 3 (in Hindi)
14:12mins