waves of higher frequencies are used to measure depth of the sea.
(a) name these waves.
(b) give the frequency of these waves
(c) give one more use of these waves
Carrom:
Nd also ultrasonic waves are used to reflect the various parts of heart .to form an image of the heart.
Actually I have nt read the question properly. So some answer I gave here.
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Sonar:the device which is used to find the submarines,a sunken ship.sonar waves consists of a transmitter and a detector which are installed in the observation centre on board of a ship.the ultra sonic waves are sent into the sea atthigh frequency about 1,000KHz in all directions.
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(a). ultrasonic wave
(b) more than 20000 hertz
(c) they r used by bats which helps them to catch their preys
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