Question

Write any 2 applications of SONAR.

Answer 1

Radar uses radio waves, which are a type of electromagnetic energy. Sonar uses the echo principle by sending out sound waves underwater or through the human body to locate objects. Sound waves are a type of acoustic energy. Because of the different type of energy used in radar and sonar, each has its own applications

Answer 2

SONAR is originally an acronym for Sound Navigation And Ranging is a technique that uses doing propagation to navigate, or communicate with or detect objects on...
Or...
Under the surface of the water, such as other vessels...

hOpe it hElps... ;)