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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.
Explain the term 'amplitude' of a wave. Draw the diagram of a wave and mark its amplitude on it.
What happens to the pitch of a sound if its frequency increases ?
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 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 ?
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What is the range of frequencies associated with (a) infrasound (b) audible sound, and (c) ultrasound ?
A sonar station picks up a return signal after 3 seconds. How far away is the object ? (Speed of sound in water = 1440 m/s).
