Sound waves in air are always longitudinal because,
- air is a mixture of several gases
- density of air is very small
- of the inherent characteristics of sound waves in air
- air does not have a modulus of rigidity
The Correct Option is D
Solution and Explanation
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Concepts Used:
Doppler Effect
The Doppler effect is a phenomenon caused by a moving wave source that causes an apparent upward shift in frequency for observers who are approaching the source and a visible downward change in frequency for observers who are retreating from the source. It's crucial to note that the impact isn't caused by a change in the source's frequency.
The Doppler effect may be seen in any wave type, including water waves, sound waves, and light waves. We are most familiar with the Doppler effect because of our encounters with sound waves