Computer · Levelling
The combined correction for refraction and Earth's curvature in levelling operations, for a distance 'd' in kilometres, is given by:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 10.057d2 m
- 20.06735d2 m✓
- 30.01122d2 m
- 40.07857d2 m
Correct answer
0.06735d2 m
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