- The audible range of sound frequencies for humans is typically considered to be from 20 Hz to 20,000 Hz (20 kHz). - Sound waves with frequencies below 20 Hz are called infrasound. - Sound waves with frequencies above 20 kHz are called ultrasound.
The frequency of ultrasound waves is
Asked in UPSC NDA 2 2018 · Topic: Sound (Ultrasound and Infrasound: Production, Properties, and Applications (SONAR, Medical, Industrial))
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