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    Question

    The instrument which uses sound waves to measure the

    depth of oceans is –
    A Radar Correct Answer Incorrect Answer
    B Sonar Correct Answer Incorrect Answer
    C Altimeter Correct Answer Incorrect Answer
    D Venturimeter Correct Answer Incorrect Answer

    Solution

    Theinstrumentwhichusessound waves to measure the depth of oceans is sonar. Sound waves can travel much faster from one point to another. Sound waves are far more accurate for measuring these vast distances. Sonar may be used as a means of acoustic location and of measurement of the echo characteristics of "targets" in the water. Sonar mayalsobeusedinairforrobotnavigation,and SODAR is used for atmospheric investigations.

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