What is 20,000 Hz called?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
20,000 Hz (20 kHz) is called an ultrasonic frequency because it's at or beyond the upper limit of human hearing. Sounds above 20 kHz are classified as ultrasound. Many animals, including dogs, cats, bats, and dolphins, can hear frequencies well above this threshold. Ultrasonic frequencies have applications in medical imaging, cleaning, and industrial testing.
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