Physics
Grade-8
Easy
Question
SONAR is used in _______
- Mobile
- Submarine
- Pen
- Table
Hint:
Submarines
The correct answer is: Submarine
- Submarines use SONAR technology to detect enemy's ship.
- SONAR stands for sound navigation and ranging.
- So, the correct option is b.
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Sound from a speaker undergoes an echo to reach the source back from a mountain located at a distance of 340 m from the source. The total time taken by the sound to cover this distance is 2 s. The speed of sound is ___ m/s.
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Sonar has receiver __________.
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Sound from a speaker undergoes an echo to reach the source back from a mountain located at a distance of 332 m from the source. The total time taken by the sound to cover this distance is 2 s. The speed of sound is ___ m/s.
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Sound from a speaker undergoes an echo to reach the source back from a mountain located at a distance of 332 m from the source. The total time taken by the sound to cover this distance is 2 s. The speed of sound is ___ m/s.
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