Which type of sound is produced by bats to catch prey?

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Infrasonic

Sonic

Ultrasonic

None of the above

answer is C.

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Detailed Solution

Ultrasonic sounds are produced by bats to catch prey.
Bats search out prey and fly in the night by emitting and detecting reflections of ultrasonic waves. During its flight, the bat emits a series of high-frequency ultrasonic waves. If any prey is flying in its path, these high-pitched ultrasonic waves strike the prey and get reflected. The reflected ultrasonic waves are received as echoes by the bat's ear. The nature of reflections (echoes) tells the bat about the prey in the following manner: The time elapsed between the emission of ultrasonic waves by the bat and their return in the form of echo gives the bat an estimate of the distance of the prey from it. The size of the prey is determined by the loudness of the echo. The bigger the prey, the louder the echo.

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