Physics · Surveying and Levelling
For a levelling staff reading, the correction for curvature (Cc) is given by which formula? (where 'd' is the horizontal distance and 'R' is the radius of the earth)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Cc = 17 [d22R] (negative)
- 2Cc = [d22R] (positive)
- 3Cc = [d22R] (negative)✓
- 4Cc = 17 [d22R] (positive)
Correct answer
Cc = [d22R] (negative)
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