Perhaps you are confusing with "refraction"? Refraction means that when a wave goes from one substance to another (for example, from air to water), it changes its direction. This is related with the index of refraction in the different substances, i.e., the wave has a different speed in the different substances.
Rarefaction
Rarefaction only occurs in a longitudinal wave. Rarefaction is the reduction of the density of a medium. It is the opposite of compression.
When you have the complete compression and rarefaction of a longitudinal wave, that is one complete wave.
rarefaction having low pressure............
A longitudinal wave can go through solids, liquids, and gases.A transversal wave will usually only go through solids. (Electromagnetic waves, however, can also go through empty space.)
Rarefaction
A rarefaction., in contrast to a compression.
Rarefaction only occurs in a longitudinal wave. Rarefaction is the reduction of the density of a medium. It is the opposite of compression.
RAREFRACTION
this kind of wave that includes compressional and rarefaction is called a longitudinal wave.
When you have the complete compression and rarefaction of a longitudinal wave, that is one complete wave.
I believe you are referring to rarefaction. The "trough" of a compression / rarefaction wave is called rarefaction.
rarefaction having low pressure............
According to my textbook it says rarefaction, is the less dense region of a longitudinal wave
A longitudinal wave can go through solids, liquids, and gases.A transversal wave will usually only go through solids. (Electromagnetic waves, however, can also go through empty space.)
No, a compression-rarefaction wave.
According to my textbook it says rarefaction, is the less dense region of a longitudinal wave