The speed of sound in a gaseous medium does not depend on which of the following factors ?
A
Temperature
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B
Density
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C
Humidity
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D
Amplitude
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Solution
The correct option is D Amplitude The speed of sound in gaseous medium is influenced by the following factors:
1. Temperature : The speed of sound in a gas increases with increase in temperature of the gas. v ∝ √T, where T is the temperature of the gas in kelvin.
2. Density : The speed of sound is inversely proportional to the square root of density of the gas
3. Humidity : The speed of sound in air increases with the increase in humidity in the air. Sound travels faster in humid air than dry air.