After completion of this lesson, student must be able to:
Sound is the form of energy, which is produced by vibration of molecules of a body. Sound travels in the form of a wave. Mechanical waves can be propagated only in material medium whereas electromagnetic waves do not require any material medium for propagation. This note provides us the information about sound and its propagation as wave.
The repetition of sound, which is reflected from walls of large room or distant surface is called echo. This note provides us the information about reflection of sound and sound pollution.
One crest and one trough constitute one complete wave in a transverse wave. Longitudinal wave travels in the form of compression and rarefaction. This note provide us the basic idea about wave and its types.
A sound is a form of energy which gives a sensation of hearing. This note provides information about and its properties.
Sound is produced due to the vibration of the body. This note provides information about sound and its properties and factors affecting the velocity of sound.