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Infrasonic Sound

We do not hea...

Question

We do not hear the screams of a bat because:

A

screams are below 30,000 Hz

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B

the screams are infra sonic

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C

the screams are ultra sonic

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D

all

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Solution

The correct option is C the screams are ultra sonic
This is because the screams are ultrasonic(above 20,000 hertz) which human ear cannot hear.

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