Bats can ascertain distances, directions, nature and size of the obstacle without any eye, explain how ?

Bats can ascertain distances, directions, nature and size of the obsta

1.	Bats can ascertain distances, directions, nature and size of the obstacle without any eye, explain how ?
Answer» Solution :Bats emit ultrasonic waves of very SMALL wavelength (high frequencise) and so high SPEED. The reflected waves from an obstacle in their path give them idea about the DISTANCE, DIRECTION,nature and size of the obstacle.