Question

Which of the following statement(s) is/are correct regarding a sound wave?

• A. Compression is a region of high density and high pressure.
• B. Rarefaction is a region of high density and high pressure.
• C. Compression is a region of low density and low pressure.
• D. Rarefaction is a is a region of low density and low pressure.

Answer 1

Answer: (A), (D)

The correct options are
A

Compression is a region of high density and high pressure.

D

Rarefaction is a is a region of low density and low pressure.

Compression is a region where particles are relatively close. So, it is a region of high density and high pressure.

Rarefaction is a region where particles are spread apart. So, it is a region of low density and low pressure.

In the figure below compression is represented by (C) and rarefaction is represented by (R)