Question

In a sound wave,is the region of high pressure andis the region of low pressure.

• A. compression
• B. rarefaction
• C. crest
• D. trough

Answer 1

Answer: (A), (B)

The correct options are
A compression
B rarefaction

During wave propagation, when a particle moves forward, it compresses the air in front of it and creates a high pressure or high-density region. This region is called compression. When a particle moves backwards, it creates a low pressure or low-density region. This region is called rarefaction.