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प्रश्न
Name the waves which are used in sonar to find the depth of sea.
एका वाक्यात उत्तर
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उत्तर
Ultrasonic waves are sent in sonar to find the depth of the sea.
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संबंधित प्रश्न
How is the frequency of a stretched string related to its length?
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Name the waves which are used in sonar to find the depth of a sea. Give one reason for their use.
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