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Question

A destroyer sends out an ultrasound to detect the presence of any submarine. A reflection of the ultrasound (reflected back from a submarine) is detected 5.8 seconds after its transmission. The speed of the ultrasound is 1531 m/s.

What is the distance between the submarine and the destroyer?


  1. 4.44 km

  2. 3.92 km

  3. 4.86 km

  4. 3.48 km


Solution

The correct option is A

4.44 km


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