Question

Sonar uses a sound of frequency less than 20 Hz.

• A. True
• B. False

Answer 1

The correct option is B False

1. The SONAR is abbreviated form of Sound Navigation and Ranging.
2. The SONAR system is used for detecting the presence of unseen underwater projects.
3. SONAR uses ultrasonic waves, with a frequency greater than 20KHz.

Hence, the given statement is false.