Answer:
Wave motion is nothing but a mode of transfer of energy from
place to place periodically without material transport.
Four characteristics of wave motion are
(i) It is the disturbance which travels forward through the
medium and not the particles of the medium.
(ii) Each particle receives vibrations a little later than
its preceding particle.
(iii) The wave velocity is different from the velocity of the
particles with which they vibrate about their mean positions.
(iv) The wave velocity remains constant in a given medium
whereas, particle velocity changes continuously during its vibrations about the
mean position.
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