MCQ
Sonar is a device for:
- ALocation and ranging of aircrafts.
- ✓Location and ranging of submarines.
- CProducing a musical note of high quality.
- DMeasuring frequency of musical notes.
Sonar is a device that uses ultrasonic waves to measure the distance, direction and speed of underwater objects. Sonar consists of a transmitter and a detector and is installed in a boat or a ship.
The transmitter produces and transmits ultrasonic waves. The distance of the object that reflected the sound wave can be calculated by knowing the speed of sound in water and the time interval between transmission and reception of the ultrasound.
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