Physics
Grade-8
Easy
Question
The sonar can detect the enemy ship using _________.
- Ultrasound
- Infra sound
- Audible sound
- None
Hint:
Ultrasound
The correct answer is: Ultrasound
- SONAR sends ultrasound waves and detects the waves after they reflect from underwater objects.
- Therefore, it can detect enemy ship by using ultrasound.
- SONAR stands for sound navigation and ranging.
- So, the correct option is a.
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