InterviewSolution
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InterviewSolution
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Speed of sound waves in airA. is independet of temperatureB. increases with pressureC. increases with increases in humidityD. decreases with increase in humidity |
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Answer» Correct Answer - C Due to presence of moisture density of air decreases. We know that speed of sound in air is given by `v=sqrt((gammap)/(rho))` For any air `gamma and p` are constants. `" " vprop(1)/(sqrt(rho))` where `rho` is density of air. `(v_(2))/(v_(1))=sqrt((rho_(2))/(rho_(1))` where `rho_(1)` is density of dry air and `rho_(2)` is density of moist air. As `" " rho_(2)ltrho_(1)=(v_(2))/(v_(1))gt1rArrv_(2)gtv_(1)` Hence, speed of sound wave in air increases wiht in humidity. |
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