Question

Name the waves used for sound ranging. State one reason for their use. Why are the waves mentioned by you not audible to us ?

Answer 1

(a)Ultrasonic Waves are used as they can penetrate deep in water without losing intensity.These are the waves used for sound ranging.

(b) Ultrasonic devices are used to detect objects and measure distances.

(c)
Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing which is 20,000 hertz .{We know that the generally accepted standard range of audible frequencies for humans is 20 to 20,000 Hz.}