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प्रश्न
What is sonar ? Explain its use.
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उत्तर
SONAR is an acronym for Sound Navigation And Ranging. Sonar is an apparatus that is used to find the depth of a sea or to locate the underwater things like shoals of fish, shipwrecks, and enemy submarines.
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संबंधित प्रश्न
Name the unit used to measure the loudness of sound. Also write its symbol.
What name is given to sound waves of frequencies higher than 20 kHz ?
Fill in the blank with suitable word :
Pitch of sound depends on ....................
Fill in the blank with suitable word :
Loudness of sound depends on .....................
Draw labelled diagrams to represent sound of (a) low pitch, and (b) high pitch, of the same loudness.
What is meant by the quality (or timbre) of sound ? On what factor does the quality (or timbre) of a sound depend ?
Explain why, if we strike a table lightly, we hear a soft sound but if we hit the table hard, a loud sound is heard.
Explain how does SONAR work?
The depth of an ocean can be determined by ______.
Expand the abbreviation of the term SONAR.
