1133Civil EngineeringMedium
Which of the following errors can be neutralised by setting the level midway between the two stations?
Anone of the above
Berror due to refraction only
Cerror due to curvature only
Derror due to both curvature and re-fraction
Correct answer
D. error due to both curvature and re-fraction
Explanation
The correct answer is error due to both curvature and re-fraction.