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Q: What was the technology developed to track the enemy submarines in Second World War?
  • A. Radar
  • B. SONAR
  • C. Echolocation
  • D. LEADER
Correct Answer: Option B - Sonar is a technique that uses sound propogation (usually under water as in submarine navigation) to navigate, communicate with or detect objects. The first recorded use of the technique was by Leonardo da Vinci in 1490 AD. After many years., it was devoloped during World War 1 to counter the threat of submarine.
B. Sonar is a technique that uses sound propogation (usually under water as in submarine navigation) to navigate, communicate with or detect objects. The first recorded use of the technique was by Leonardo da Vinci in 1490 AD. After many years., it was devoloped during World War 1 to counter the threat of submarine.

Explanations:

Sonar is a technique that uses sound propogation (usually under water as in submarine navigation) to navigate, communicate with or detect objects. The first recorded use of the technique was by Leonardo da Vinci in 1490 AD. After many years., it was devoloped during World War 1 to counter the threat of submarine.