If the horizontal distance between the staff point and the point of observation is d, then the error due to curvature of earth is proportional to
A. $${\text{d}}$$
B. $$\frac{1}{{\text{d}}}$$
C. $${{\text{d}}^2}$$
D. $$\frac{1}{{{{\text{d}}^2}}}$$
Answer: Option C
This Question Belongs to Civil Engineering >> Surveying
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