bats can ascertain distance, directions, natural and size of the obstacles at night, This is possible by reflection of the emitted?

9th-class-result-2022

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bats can ascertain distance, directions, natural and size of the obstacles at night, This is possible by reflection of the emitted?

Incorrect

Ultrasonic waves form distant objects

Incorrect

Supersonic waves for distant object

Correct

Ultrasonic waves form the bat

Incorrect

Supersonic waves form the bat

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