Multiple choice

The sound used in SONAR system is

  1. audible

  2. musical

  3. infrasonic

  4. ultrasonic

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

SONAR (Sound Navigation And Ranging) uses ultrasonic sound waves (frequencies above 20,000 Hz, inaudible to humans) because they provide better resolution and directionality for underwater detection and distance measurement.