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Q. |
In levelling, the correction for curvature (in metres) is equal, where D = Distance from the level to the staff reading in kilometres. |
A. | 0.00785 D2 |
B. | 0.0785 D2 |
C. | 0.0112 D2 |
D. | 0.0673 D2 |
Answer» B. 0.0785 D2 |
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