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Name any four waves which need no medium for their propagation.

Dear student,E
electromagnetic waves(EM waves) does not require a medium.. eg..light, radio travel in air(which is not considered to be a "travelling" medium).. Light, microwaves, x-rays, and TV and radio transmissions are all kinds of electromagnetic waves.

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electromagnetic
light
 
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Electromagnetic waves are so far been detected not to use any type of medium for their propagation because they can also travel in vaccum.
Light waves and radio waves too do not require any medium for their propagation.
so far only three waves are detected to not use any medium for their propagation...
  • electromagnetic waves
  • radio waves
  • light waves
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