What is a possible frequency of an ultrasound wave? A)0.1kHz.B)3kHz.C)10kHz.D)30kHz
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In physics the term “ultrasound” applies to all acoustic energy with a frequency above human hearing (20,000 hertz or 20 kilohertz). Typical diagnostic sonographic scanners operate in the frequency range of 2 to 18 megahertz, hundreds of times greater than the limit of human hearing.
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Answer:
D)
Explanation:
its above then 20kHz so here 30 is above then 20
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