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प्रश्न
In SONAR we use:
विकल्प
ultrasonic waves
infrasonic waves
radio waves
audible sound waves
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उत्तर
ultrasonic waves
Ultrasonic waves are used in SONAR.
संबंधित प्रश्न
A submarine emits a sonar pulse, which returns from an underwater cliff in 1.02 s. If the speed of sound in salt water is 1531 m/s, how far away is the cliff?
Explain the working and application of a sonar.
Fill in the blank with suitable word .
Sound waves are caused by ...................
What type of scans are used these days to monitor the growth of developing baby in the uterus of the mother ?
How is an ultrasound scan for fetus (unborn baby) better than X-ray ?
Write the full name of 'SONAR'.
What happens to the pitch of a sound if its frequency increases ?
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 ....................
Name an animal which navigates and finds food by ecolocation.
