What is SONAR? How SONAR Works?

Namaskaar Dosto, is video mein maine aapse SONAR ke baare mein baat ki hai, SONAR kya hai aur kaise kaam karta hai aur hum ise kaha kaha use karte hai? Mujhe umeed hai ki aapko SONAR ke baare mein yeh video pasand aayegi. 

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