MCQOPTIONS
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| 1. |
A Sonar of a ship sends sounds waves of speed 1600m/s. These waves are reflected back by the ocean floor in 4 seconds. Find the depth (in m) of the ocean floor. |
| A. | 6400 |
| B. | 3200 |
| C. | 1600 |
| D. | 4800 |
| Answer» C. 1600 | |