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प्रश्न
In SONAR we use:
पर्याय
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?
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 ?
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.
How is it that bats are able to fly at night without colliding with other objects ?
Explain how, flaws (or defects) in a metal block can be detected by using ultrasound.
Write any three applications (or uses) of ultrasound.
Name an animal which navigates and finds food by ecolocation.
Explain how does SONAR work?
