The combined correction due to curvature and refraction (in m) for a distance of 1 km on the surface of Earth is

The combined correction due to curvature and refraction (in m) for a d

1.	The combined correction due to curvature and refraction (in m) for a distance of 1 km on the surface of Earth is
A.	0.0673
B.	0.673
C.	7.63
D.	0.763
Answer» B. 0.673

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The combined correction due to curvature and refraction (in m) for a distance of 1 km on the surface of Earth is

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