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Surveying

Q1:

For true difference in elevations between two points A and B, the level must be set up

A at any point between A and B

B at the exact mid point of A and B

C near the point A

D near the point B.

ANS:B - at the exact mid point of A and B

For the minimum error due to curvature and refraction, the level must be set such that back sight and foresight distances are equal. We take in differential leveling for accuracy for sight = back sight.



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