Question

Bats have no eyes still they can measure distances, directions, nature and size of the obstacles? Why.

Answer 1

Bats although dont hve eyes but bcoz bats makes  ultrasonic waves hits the obstacles and returns back thus  helps in finding distance

Answer 2

Bats emit ultrasonic waves of large frequencies. When these waves are reflected from the obstacles in their path, they give them the idea about the distance, direction, size and nature of the obstacle.

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