Class 9 Physics

Sound is everywhere — but do you know exactly how it’s produced and why it can’t travel through empty space? This quiz covers NCERT book Exploration’s Class 9 Science, Chapter 10, Sections 10.1 and 10.2: the vibration-based production of sound,…

Production and Propagation of Sound Key points that govern production and propagation of sound: What Produces Sound? Vibration is the periodic to-and-fro motion, or oscillation, of an object. Sound is produced whenever an object vibrates, and it stops as soon…