Physics
Grade-8
Easy
Question
SONAR is used in _______.
- Mobile
- Submarine
- Pen
- Table
Hint:
Submarines
The correct answer is: Submarine
- Submarines use Sonar (Sound Navigation and Ranging) to detect target (enemy) ships.
- So, the correct option is b.
- It works on the principle of reflection of ultrasound waves.
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The sound from the transmitter of the SONAR is reflected by.
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The SONAR can detect the enemy ship using _________.
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If the velocity of sound is 3 m/s and the distance between the object is 3 m, find the time taken to hear an echo?
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The device that transmits ultrasounds in SONAR is called _______.
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- Refraction is the bending of sound waves when they enter from one medium to another medium.
