MCQOPTIONS
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| 1. |
Which of the following errors can be neutralised by setting the level midway between the two stations ? |
| A. | rror due to curvature only |
| B. | rror due to refraction only |
| C. | rror due to both curvature and re-fraction |
| D. | one of the above |
| Answer» D. one of the above | |