I. Temperature.
II. Density of air molecules
III. Pressure
IV. Pitch
A. I and II only
B. II and IV only
C. I, II, and IV only
D. I, II, III and IV
Correct Answer:
Option A – I and II only
Explanation
Air pressure has no effect on speed of sound in an ideal gas because pressure and density both contribute to sound velocity equally, the two effects cancel each other out
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