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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
Give two practical applications of reflection of sound waves.
Name the unit used to measure the loudness of sound. Also write its symbol.
Name the characteristic of sound which depends on (a) amplitude (b) frequency, and (c) waveform.
Explain the term 'pitch' of a sound. On what factor does the 'pitch' 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, bats use ultrasound to catch the prey.
Write any three applications (or uses) of ultrasound.
Name an animal which navigates and finds food by ecolocation.
Explain how does SONAR work?
Expand the abbreviation of the term SONAR.
