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Question

Define wave with an example.


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Solution

Wave:

  1. A wave is a disturbance that transfers energy and momentum from one point to another in a medium.
  2. For example, the wave of the ocean moves in medium water and we can see the movement of the wave crest from one side to the other side in a given time period.
  3. When a wave travels in a medium, the particles vibrate about their mean position transferring energy to the neighbouring particle without leaving their original place.
  4. Some of the waves do not require a medium for their propagation. These waves are called non-mechanical waves. e.g. electromagnetic waves.

Waves can be classified:

  1. Transverse wave: in this, the particles of the medium vibrate in a direction perpendicular to the direction of propagation of the wave.
  2. Longitudinal wave: in this, the particles vibrate in the same direction as the propagation of a wave.

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