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Byju's Answer
Standard IX
Physics
Audible,Infrasonic and Ultrasonic Sound
Sound waves w...
Question

Sound waves with frequency smaller than 20 Hz are called:


A

ultrasound

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B

infrasound

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C

nanosound

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D

minisound

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Solution

The correct option is B

infrasound


Sound waves with a frequency smaller than 20 Hz are called infrasound. Rhinoceroses communicate using infrasound of frequency as low as 5 Hz.


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