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प्रश्न
In SONAR we use:
विकल्प
ultrasonic waves
infrasonic waves
radio waves
audible sound waves
उत्तर
ultrasonic waves
Ultrasonic waves are used in SONAR.
संबंधित प्रश्न
Explain how defects in a metal block can be detected using ultrasound.
Explain the term 'amplitude' of a wave. Draw the diagram of a wave and mark its amplitude on it.
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 three characteristics of sound.
What name is given to sound waves of frequencies higher than 20 kHz ?
How is it that bats are able to fly at night without colliding with other objects ?
What is the range of frequencies associated with (a) infrasound (b) audible sound, and (c) ultrasound ?
Name an animal which navigates and finds food by ecolocation.
What is sonar ? Explain its use.
The ultrasound waves can penetrate into matter to a large extent because they have :
