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Q. |
Speed of sound in air is unaffected by change in : |
A. | Pressure |
B. | Humidity |
C. | Temperature |
D. | Volume |
Answer» A. Pressure | |
Explanation: The speed of sound in air depends on the density of air and the density of air depends on the temperature. The speed of sound is unaffected by pressure. If the atmospheric pressure changes, the speed of sound in air remains constant. |
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