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Engineering-Surveying-Mcqs-2

If back sight and fore sight distance are kept equal during levelling observations, n effect of both refraction and earth's curvature will be

2/3 d² meters 0.06735 d² meters 0.057 d² meters zero

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The combined correction for refraction and earth's curvature (in levelling observations) is

If back sight and fore sight distance are kept equal during levelling observations, n effect of both refraction and earth's curvature will be

Personal error in levelling occur due to

If the back sight and fore sight distance are kept equal during levelling observations

then the effect of both refraction and earth's curvature will be

Engineering Surveying Mcqs 2

Engineering-Surveying-Mcqs