Physics, asked by neelsankhe, 17 days ago

Ultrasonic sound have frequency _____

a) below 20hz
b) above 10000hz
c) above 20000hz
d) below 20000hz

Answers

Answered by Anonymous

Answer:

above 20000hz

please mark as brainliest..

Answered by Johnsonmijo

Answer:

c) above 20000 Hz.

Explanation:

Ultrasonic sound waves have a frequency higher than 20000 Hz or 20 kHz. It is out of the audible range of humans. Many animals can detect sound waves of this frequency range.

Dog whistles that cannot be heard by humans are an example of ultrasonic sound waves. Since the audible range of humans is from 20 Hz to 20 kHz, we cannot hear the dog whistles.

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