MCQOPTIONS
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| 1. |
The staff reading at a distance of 80 m from a level with a bubble at centre is 1.31 m. When the bubble is moved 5 divisions out of the centre, the reading is 1.39 m. Then the angular value of one division of the bubble is: |
| A. | 28.78 sec |
| B. | 41.25 sec |
| C. | 14.25 sec |
| D. | 25.05 sec |
| Answer» C. 14.25 sec | |