Question

why the particle in wave motion only vibrate about their mean position​

Answer 1

Explanation:

When a disturbance is produced in a medium , medium particles start vibration and transmit this disturbance by passing to the next particles , in his way energy (disturbance) is transmitted by wave motion . In this mechanism , medium particles only vibrate to and fro about their mean position and don't get a net displacement in any direction.

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