Question

What is ultrasonic??

Are bas or tareef hazam noi hogi ( ꈍᴗꈍ) xD ​

Answer 1

Answer:

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Sound travels as a mechanical longitudinal wave in which back-and-forth particle motion is parallel to the direction of wave travel. Ultrasound is high-frequency sound and refers to mechanical vibrations above 20 kHz. Human ears can hear sounds with frequencies between 20 Hz and 20 kHz.

Answer 2

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• Sound travels as a mechanical longitudinal wave in which back-and-forth particle motion is parallel to the direction of wave travel.