MCQOPTIONS
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| 1. |
A Sonar of a ship sends sound waves of speed 1500 m/s. These waves are reflected back by the ocean floor in 5 seconds. Find the depth (in m) of the ocean floor. |
| A. | 3750m |
| B. | 7500m |
| C. | 1875m |
| D. | 5000m |
| Answer» B. 7500m | |