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Assertion : Compression and rarefaction ...

Assertion : Compression and rarefaction involve changes in density and pressure.
Reason : When particles are compressed, density of medium increases and when they are rarefied, density of medium decreases.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true and reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
A
A compression is a region of medium in which particle come closer i.e, distance the particles becomes less than the normal distance between them. Thus there is a temporary decrease in volume and consequent increase in density of medium. Similarly in rarefaction, particle get farther apart and consequent decrease in density.
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