Question

Name the waves used for sound ranging. state one reason for their use????

Answer 1

ultrasonic waves .
they are used because they can go far distance undeviated

Answer 2

"This technique is used to locate the position of submarine,rocks & to determine the depth of sea"......
In this method ULTRASONIC WAVES are used bcoz they transmitted from the transmitter towards the objects like submarine or rocks under water. The wave reflected from these objects are received by the receiver........