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प्रश्न
Write the full name of 'SONAR'.
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उत्तर
SONAR is an acronym for SOund Navigation And Ranging.
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संबंधित प्रश्न
Give two practical applications of reflection of sound waves.
Define the 'frequency' and 'time-period' of a wave. What is the relation between the two?
Fill in the blank with suitable word .
Sound waves are caused by ...................
Name the characteristic which helps us distinguish between a man's voice and a woman's voice, even without seeing them.
How does the pitch of a sound depend on frequency ?
How is an ultrasound scan for fetus (unborn baby) better than X-ray ?
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.
Define the following terms : (a) Echolocation (b) Echocardiography, and (c) Ultrasonography.
In SONAR we use:
