Which of the following factors will affect the velocity of sound?
A.
An increase in the pitch of the sound
B.
An increase in the loudness of the sound
C.
Wind travelling in the same direction of the sound
D.
A change in the atmospheric pressure at constant temperature
Correct Answer: Option C
Explanation
Pitch, loudness, and atmospheric pressure do not affect sound velocity. Wind traveling in the same direction of sound affects its velocity. wind can slow down or accelerate the speed of sound, depending on whether it is blowing in the same direction or in the opposite direction to the sound signal.
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