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प्रश्न
In SONAR we use:
पर्याय
ultrasonic waves
infrasonic waves
radio waves
audible sound waves
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उत्तर
ultrasonic waves
Ultrasonic waves are used in SONAR.
संबंधित प्रश्न
A submarine emits a sonar pulse, which returns from an underwater cliff in 1.02 s. If the speed of sound in salt water is 1531 m/s, how far away is the cliff?
How is ultrasound used for cleaning?
How does the pitch of a sound depend on frequency ?
Name the characteristic of sound which depends on (a) amplitude (b) frequency, and (c) waveform.
What is meant by the 'loudness' of sound ? On what factor does the loudness of a sound depend ?
What is meant by the quality (or timbre) of sound ? On what factor does the quality (or timbre) of a sound depend ?
Explain how, flaws (or defects) in a metal block can be detected by using ultrasound.
Write any three applications (or uses) of ultrasound.
Which of the two produces ultrasonic waves : porpoise or whale ?
What is sonar ? Explain its use.
