MCQOPTIONS
Saved Bookmarks
| 1. |
A Sonar of a ship sends sounds waves of speed 1000 m/s. These waves are reflected back by the ocean floor in 2 seconds. Find the depth (in m) of the ocean floor. |
| A. | 2000 |
| B. | 500 |
| C. | 1000 |
| D. | 100 |
| Answer» D. 100 | |