In SONAR which kind of wave is used? A. Infrasonic B. Ultrasonic C. Radio D. Audible sound

The correct answer is: B. Ultrasonic

SONAR stands for Sound Navigation and Ranging. It is a technique that uses sound waves to measure distances underwater. SONAR is used by ships, submarines, and other marine vehicles to navigate, detect obstacles, and locate objects.

Sound waves are a type of mechanical wave that travels through a material medium. The frequency of a sound wave is the number of waves that pass a given point in a given amount of time. The human ear can hear sound waves with frequencies between 20 and 20,000 hertz (Hz).

Ultrasonic waves are sound waves with frequencies above 20,000 Hz. Humans cannot hear ultrasonic waves, but many animals can, including bats, dolphins, and whales. Ultrasonic waves are used in a variety of applications, including SONAR, medical imaging, and industrial inspection.

In SONAR, ultrasonic waves are transmitted from a source and then reflected off of objects in the water. The time it takes for the waves to travel to the object and back is used to calculate the distance to the object. SONAR

SONAR is a valuable tool for marine navigation and exploration. It is also used for military purposes, such as submarine detection and mine detection.