Q31 of 199 Page 206

What name is given to the sound waves of frequency too low for humans to hear?

The name given to the sound waves of frequency too low for humans to hear is infrasound.


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29

Name two sound absorbing materials (or obhects) which can make our big room less echoey.

 30

Can we hear

(a) infrasonic waves


(b) ultrasonic waves?

 32

What name is given to the sound waves of frequency too high for humans to hear?

 33

What type of sound waves are produced by a vibrating simple pendulum?