Which of these is not an application of SONAR?

To determine the depth of a sea

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To detect submarines

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Medical diagnosis by ultrasonography

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To determine the presence of toxins in seawater

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Solution

The correct option is D
To determine the presence of toxins in seawater

SONAR works on the principle of echo of sound wave, the time between the echo and sound wave is measured to calculate the distance between the source and the obstacle, this can be used to detect submarines, determine the depth of a sea and for medical diagnosis by ultrasonography but cannot be used to determine the presence of toxins in seawater.

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