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प्रश्न
What is the name of the device which is used to find the depth of sea (or ocean) by using ultrasonic sound waves ?
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उत्तर
Sonar is a device used to find the depth of a sea through ultrasonic sound waves.
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संबंधित प्रश्न
A sonar device on a submarine sends out a signal and receives an echo 5 s later. Calculate the speed of sound in water if the distance of the object from the submarine is 3625 m.
Name the characteristic of sound which depends on (a) amplitude (b) frequency, and (c) waveform.
What happens to the loudness of a sound if its amplitude decreases ?
Fill in the blank with suitable word :
Loudness of sound depends on .....................
Draw labelled diagrams to represent (a) soft sound, and (b) loud sound, of the same frequency.
What is meant by the quality (or timbre) of sound ? On what factor does the quality (or timbre) of a sound depend ?
Name an animal which navigates and finds food by ecolocation.
What is sonar ? Explain its use.
The ultrasound waves can penetrate into matter to a large extent because they have :
The depth of an ocean can be determined by ______.
