Question

Define vibration ?
class 8
ch 12
chapter nane sound
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Answer 1

Vibration is defined as a rapid to and fro or up and down movement about a mean position. Vibrations travel through a medium such as air and reach our ears where they are interpreted by the brain as sound.

Answer 2

Vibration, periodic back-and-forth motion of the particles of an elastic body or medium, commonly resulting when almost any physical system is displaced from its equilibrium condition and allowed to respond to the forces that tend to restore equilibrium.

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