Combined correction for curvature and refraction for 800 m distance is……
A)0.0431m
B)1m
C)0.5m
D)2 m

Question

Quizplus · Accepted Answer

The combined correction for curvature and refraction for a distance is calculated using the formula: $C = -0.0673 \times D^2$, where $C$ is the correction in meters and $D$ is the distance in kilometers. For 800 m (or 0.8 km), the calculation is $C = -0.0673 \times (0.8)^2 = -0.0431m$. This correction accounts for both the earth's curvature and the atmospheric refraction, which slightly bends the light downwards.

Combined Correction for Curvature and Refraction for 800 M Distance