Multiple choice general knowledge science & technology

When ships sail in sea , the use SONAR method to find the depth of sea at any place or to locate any enemy submaries. The concept behind SONAR is ______ .

  1. superposition principle

  2. echo

  3. both of the above

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

SONAR (Sound Navigation and Ranging) works on the principle of echo - sound waves are emitted, reflected back from objects, and the time delay gives distance/depth. Superposition principle refers to wave interference, which is not the core concept here.

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