Musical sound is produced by:
Periodic vibrations
Non-periodic vibrations
Factories
Loudspeakers
Musical sound is pleasing to hear hence they are produced by periodic vibrations.
Name one musical instrument each in which the sound is produced :
(a) by vibrating a stretched siring.
(b) by vibrating air enclosed in a tube.
(c) by vibrating a stretched membrane
(d) by vibrating metal plates.