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Q.

Infrasound can be detected by?

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a

 dog

b

bat

c

 rhinoceros

d

human beings

answer is C.

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Detailed Solution

 Infrasound is a low-frequency sound that occurs below the frequency range of 20Hz. As a result, it can only be heard and emitted by live species that are sensitive to frequencies below 20 Hz.

Rhinoceros have extraordinarily good hearing and are hence classified as infrasonic creatures. They can converse through infrared sounds.

A healthy person's hearing frequency range is between 20 to 20,000 Hz.

As a result, neither a dog nor a bat can hear infrared sound. The lower limit of a dog's frequency range is 67 Hz.

Hence, the correct option is (3)


 

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