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Q.

The ____ sent by the bat to the prey are received by them and reflected from the prey. This makes the bat move in the right direction to catch the prey.


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a

Soft sound

b

Loud sound

c

High pitch ultrasound

d

Low pitch ultrasound 

answer is C.

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Detailed Solution

The high-pitch ultrasound sent by the bat to the prey is received by them, and they get reflected from the prey.
The ultrasounds are the sounds with frequencies higer than 20 kHz. The bats use ultrasound to catch prey by using the phenomenon of reflection of sound waves. The bats produce the ultrasonic wave, which gets reflected from the prey and returns to the bats' ears. This makes the bat find out the distance and position of the prey.
 
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The ____ sent by the bat to the prey are received by them and reflected from the prey. This makes the bat move in the right direction to catch the prey.