Q:

What frequencies are attributed to the inaudible sound known as Ultrasound?

waelhammad
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2022-10-21
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What frequencies are attributed to the inaudible sound known as Ultrasound?

  1. greater than 2 kHz.
  2. greater than 2 MHz.
  3. greater than 20,000 Hz or less than 20 Hz
  4. less than 20 Hz.
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waelhammad
2022-10-21
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B: Frequencies less than 20Hz are call infrasound. Frequencies greater than 2 kHz (2000Hz) are still audible. The best answer is 2 MHz. While this is frequency typical of medical ultrasound, any frequency greater than 20,000 Hz is inaudible and called ultrasound.

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