What is rarefaction??? Explain.
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Refraction is a phenomenon of bending of light while passing from one medium to another
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Rarefaction is nothing but reduction in the density of something, especially air or a gas.
rarefaction. ... Most of the time, rarefaction refers to air or other gases becoming less dense. When rarefaction occurs, the particles in a gas become more spread out. You may come across this word in the context of sound waves. A sound wave moving through air is made up of alternating areas of higher and lower density.
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