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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?
A wave is moving in air with a velocity of 340 m/s. Calculate the wavelength if its frequency is 512 vibrations/sec.
Name the characteristic of sound which depends on (a) amplitude (b) frequency, and (c) waveform.
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 ?
Fill in the blank with suitable word :
Pitch of sound depends on ....................
What is meant by the quality (or timbre) of sound ? On what factor does the quality (or timbre) of a sound depend ?
Give one use of ultrasound in industry and one in hospitals.
Define the following terms : (a) Echolocation (b) Echocardiography, and (c) Ultrasonography.
The depth of an ocean can be determined by ______.
