Question

What is the full name of SONAR?

A. Sound Neutralization and Ranging

B. Sound Navigating and Reaching

C. Sound Navigation and Ranging

D. Sound Neuralization and Reaching

1. A
2. B
3. C
4. D

Answer 1

Correct Answer - Option 3 : C

The Correct Answer is Sound Navigation and Ranging.

• The full name of SONAR is Sound Navigation and Ranging.

• Sonar is a technique that uses sound propagation usually underwater to navigate, communicate with, or detect objects on or under the surface of the water.
• Two types of technology share the name "sonar": 
  • Passive sonar is essentially listening for the sound made by vessels; 
  • Active sonar is emitting pulses of sounds and listening for echoes.
• Sonar may also be used for robot navigation and SODAR (an upward-looking in-air sonar) is used for atmospheric investigations

 

•  A sonar device sends pulses of sound waves down through the water.
• When these pulses hit objects like fish, vegetation, or the bottom, they are reflected back to the surface.  
• This information enables the device to judge the depth of the object it reflected off.
• The first recorded use of the technique was by Leonardo da Vinci in 1490 who used a tube inserted into the water to detect vessels by ear.