
Concept explainers
The correct option.

Answer to Problem 33R
The correct option is C.
Explanation of Solution
Introduction:
Longitudinal waves make rarefaction ad compression region.
The region where particle density is higher is called compression region and the region where particle density is lesser is called rarefaction region.
The region X is the rarefaction region because the density in that region is lesser as compared to the other regions.
Crest is the highest point in the wave but here region X is not the highest position, region adjacent to X is compression as the particles are compressed.
Trough is the lowest point in a sine wave, this is not a sign wave.
Thus, a, b and d are incorrect.
Conclusion:
Therefore, the correct option is C.
Chapter 9 Solutions
Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
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