engineering recuitment TNPSC AE Civil 2024 Test series Surveying Levelling

A light house of 120 m height is just visible above the horizon from a ship. The correct distance (m) between the ship and the light house considering combined correction for curvature and refraction is

1
39.098 m
2
42.226 m
3
39098 m
4
42226 m
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