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Audible range

Ultrasound ha...

Question

Ultrasound has frequency of vibration ___.

A

between 20 and 20,000 Hz

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B

below 20 Hz

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C

above 20,000 Hz

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D

between 500 and 10,000 Hz

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Solution

The correct option is C above 20,000 Hz
Ultrasound refers to sound with a frequency above 20,000 Hz. It is inaudible to human ears as the audible range of frequencies for humans is $20 H z$ to $20, 000 H z$ .

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