How does the speed of sound in air depend on atmospheric pressure P?
Correct answer: B. v is directly proportional to P^1/2
- A. v is directly proportional to P^−1
- B. v is directly proportional to P^1/2
- C. v is directly proportional to P^−1/2
- D. v is directly proportional to P0
Explanation
The speed of sound in air is directly proportional to the square root of atmospheric pressure. Therefore, the correct relationship is v∝(P)^1/2 , where v is the speed of sound and P is the atmospheric pressure.
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