Question

Какие частоты имеет ультразвук? Более высокие, чем обычный звук, слышимый человеком Более низкие, чем обычный звук, слышимый человеком Частоты ультразвука нельзя сравнивать с частотами обычного звука, слышимого человеком Среди ответов нет верного

Answer 1

Это звук частотой более 20 000 Гц. Правильный ответ номер 1

Answer 2

Frequencies of Ultrasound

Ultrasound refers to sound waves with frequencies higher than the upper audible limit of human hearing. The frequencies of ultrasound are higher than those of ordinary sound that is audible to humans.

Ultrasound waves typically have frequencies above 20,000 hertz (Hz), which is the upper limit of human hearing. These high-frequency sound waves are used in various applications, including medical imaging, industrial testing, and cleaning processes.

Ultrasound frequencies can vary depending on the specific application. For example, medical ultrasound imaging typically uses frequencies in the range of 2 to 18 megahertz (MHz), while industrial ultrasound testing may involve frequencies ranging from 100 kilohertz (kHz) to several megahertz.

In summary, the frequencies of ultrasound are indeed higher than those of ordinary sound that is audible to humans.