What is sound, and how is it produced?
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Sound is a form of energy that produces the sensation of hearing in our ears. Sound is produced when a body vibrates.
For example — sound of morning alarm, a dog barking, music from different instruments etc.
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What is the audible range of the average human ear?
What is the range of frequencies associated with
(a) Infrasound?
(b) Ultrasound?
Describe, with the help of a diagram, how compressions and rarefactions are produced in the air near a source of the sound.
Why is sound wave called a longitudinal wave?