Respuesta :

Answer: A region of a longitudinal wave where the medium is spaced far apart is known as Rarefaction.

Explanation:

A longitudinal wave is the one which requires medium to travel. The medium particles vibrate parallel to the direction of wave propagation. A longitudinal wave travels in the form of compression and rarefaction. A high density region of longitudinal wave is known as compression and a low density region is known as rarefaction. The medium is spaced apart in this region.

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