GATE CE 2015 Set 1 — Question 34

MCQ+1 / -0.33EasyGeodetic SurveyingPrinciples of SurveyingGeomatics Engineering

Geomatics Engineering → Principles of Surveying → Geodetic Surveying

Last updated 5 September 2026

Question

Which of the following statements is FALSE?

Correct answer (B) Mean Sea Level (MSL) is used as a reference surface for establishing the horizontal control Solution 1. Plumb line : It is the line along which a weight suspended by a string hangs. It points towards the center of gravity of the Earth at that point. Thus, it is along the direction of gravity. (True) 2. Mean Sea Level (MSL) : It is used as a datum for vertical control (elevations/heights). Horizontal control is established using a reference ellipsoid (like WGS84). (False) 3. MSL and Geoid : The Geoid is the equipotential surface of the Earth's gravity field that best fits MSL. MSL is often considered a physical realization of the geoid. (True) 4. Geoid : By definition, it is an equipotential surface of the Earth's gravity field. (True) The false statement is (B). Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer (B) Mean Sea Level (MSL) is used as a reference surface for establishing the horizontal control Solution 1. Plumb line : It is the line along which a weight suspended by a string hangs. It points towards the center of gravity of the Earth at that point. Thus, it is along the direction of gravity. (True) 2. Mean Sea Level (MSL) : It is used as a datum for vertical control (elevations/heights). Horizontal control is established using a reference ellipsoid (like WGS84). (False) 3. MSL and Geoid : The Geoid is the equipotential surface of the Earth's gravity field that best fits MSL. MSL is often considered a physical realization of the geoid. (True) 4. Geoid : By definition, it is an equipotential surface of the Earth's gravity field. (True) The false statement is (B).

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