Computer · Levelling and Surveying
In levelling, if the distance between the instrument position and the staff position (D) is in kilometres, then the correction for refraction (in meters) is approximately equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 10.00785 * D2
- 20.0012 * D2
- 30.0112 * D2✓
- 40.0785 * D2
Correct answer
0.0112 * D2
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