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Ultrasound has frequency of vibration

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Between

20

and

20, 000 Hz

Below

20 Hz

Above

20, 000 Hz

Between

500

and

10, 000 Hz

answer is C.

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Detailed Solution

Ultrasound has frequency of vibration above

20, 000 Hz

.
The frequency range of more than

20, 000 Hz

is the range of ultrasonic sound. A healthy person's average hearing frequency ranges from

20 Hz

20, 000 Hz

. A frequency less than

20 Hz

is called infrasonic, which is audible to some animal species like elephants and whales. We use ultrasonic frequency in ultrasound for detecting severe medical problems like cancer etc.

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