Question

Assertion:
Sound is produced by vibrations made by a vibrating body.
Reason:
When vibrations are stopped , the sound doesn' t stop​.

Answer 1

The source of a sound vibrates, bumping into nearby air molecules which in turn bump into their neighbours, and so forth. This results in a wave of vibrations travelling through the air to the eardrum, which in turn also vibrates. What the sound wave will sound like when it reaches the ear depends on a number of things such as the medium it travels through and the strength of the initial vibration.