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प्रश्न
Fill in the blank and explain.
To discover a sunken ship or objects deep inside the sea, ______ technology is used.
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उत्तर
To discover a sunken ship or objects deep inside the sea, SONAR technology is used.
Explanation:
The technology of SONAR (Sound navigation and ranging) is used to estimate the distance and location of underwater objects. A transmitter and a detector are fitted in a ship to do this.
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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 ...................
How does the pitch of a sound depend on frequency ?
What type of scans are used these days to monitor the growth of developing baby in the uterus of the mother ?
What is the name of the device which is used to find the depth of sea (or ocean) by using ultrasonic sound waves ?
Write the full name of 'SONAR'.
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 .....................
Fill in the blank with suitable word :
Quality of sound depends on ........................
What is meant by the 'loudness' of sound ? On what factor does the loudness of a sound depend ?
Draw labelled diagrams to represent (a) soft sound, and (b) loud sound, of the same frequency.
Explain the term 'pitch' of a sound. On what factor does the 'pitch' of a sound depend ?
Draw labelled diagrams to represent sound of (a) low pitch, and (b) high pitch, of the same loudness.
What is the range of frequencies associated with (a) infrasound (b) audible sound, and (c) ultrasound ?
Write any three applications (or uses) of ultrasound.
What type of waves are generated by SONAR device fixed to a fishing ship ?
