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Q.

Is it true that humans can hear infrasonic and ultrasonic sound waves?


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a

True

b

False 

answer is B.

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Detailed Solution

The above statement is false.
Humans can hear sound waves of frequency ranging from 20 Hz to 20 kHz, and infrasonic sounds lie below the frequency of 20 Hz, while ultrasonic sounds lie above 20 kHz frequency. Hence, humans can neither hear infrasonic nor ultrasonic sound waves, and the above statement is false.
The correct statement would be humans can not hear infrasonic and ultrasonic sound waves.
 
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