COMEDK · Physics · 16. Waves and Sound
Sound waves in air are always longitudinal because
- A of the inherent characteristics of sound waves in air
- B air does not have a modulus of rigidity
- C air is a mixture of several gases
- D density of air is very small
Answer & Solution
Correct Answer
(B) air does not have a modulus of rigidity
Step-by-step Solution
Detailed explanation
Longitudinal waves in air travels in the form as compression and rarefaction that changes its elastic properties. The air is a completely elastic medium, which does not have a modulus of rigidity. So, sound waves travel in it as a longitudinal wave.
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