Q.

Which sound can be heard by dogs?


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a

Ultrasonic

b

Infrasonic

c

Supersonic

d

None of the above 

answer is A.

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Detailed Solution

Ultrasonic sounds can be heard by dogs.
The human range of hearing is from 20 Hz to 20 KHz. Sounds of frequency less than 20 Hz are defined as infrasound, while the sound of frequency more than 20 kHz is termed ultrasound. Dogs can hear ultrasound sounds. Whereas elephants, rhinoceros, etc. can hear infrasonic sounds.
 
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