Physics
Grade-8
Easy
Question
A sonar can detect the enemy ship using
_________ .
- Ultrasound
- Infrasound
- Audible sound
- None
Hint:
Ultrasound
The correct answer is: Ultrasound
- SONAR uses high frequency sound waves/ultrasound to detect the enemy ship.
- By observing the time taken by the ultrasound waves to return to the source after reflection from the enemy ship, the distance is calculated
- So, the correct option is a.
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