Question

A. Choose the correct options.
1. When sound travels through air, the air particles
A. Vibrate perpendicular to the direction of wave propagation
b. Vibrate along the direction of wave propagation
C. Vibrate but not in any fixed direction
d. Do not vibrate​

Answer 1

Answer:

b. Vibrate along the direction of wave propagation

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Answer 2

Explanation:

b. Vibrate along the direction of wave propagation