Question

explain sonar

Answer 1

SONAR stands for sound navigation and ranging. SONAR is a device which is used by ships and submarines to locate position of other vessels in the ocean. These are of two types. One is passive, which only detects the incoming. Another one is active SONAR which transmits sound pulses and detects the reflected echoes to detect presence of other sea vessels. Principle behind SONAR is reflection of sound.