A map projection is
Show Hint
- a systematic representation of latitude and longitude lines on a plane (paper map).
- a representation of the 3D shape of Earth on a 2D plane.
- dependent on the location of area on the Earth.
- required for taking theodolite observations of horizontal angles.
The Correct Option is A, B, C
Solution and Explanation
- Option (A): A map projection is indeed a systematic representation of latitude and longitude lines on a plane. This is one of the basic methods of representing the Earth's surface, typically using a grid system.
- Option (B): A map projection represents the 3D shape of the Earth on a 2D plane. This is the most fundamental definition of map projection, where a spherical or ellipsoidal Earth is mapped to a flat surface.
- Option (C): The projection used can indeed depend on the location of the area on Earth. Different projections may be better suited to represent different parts of the world, e.g., cylindrical projections for equatorial regions, conic projections for mid-latitudes, etc.
- Option (D): This option is incorrect. Theodolite observations of horizontal angles do not directly relate to map projections. This refers to angle measurements in surveying, which is a separate concept from map projection. Thus, the correct answers are (A), (B), and (C).
Top Questions on Maps
In a map based on the UTM projection, the grid distance is in error with respect to the geodetic distance by about one in four thousand. If the map distance is 3 cm and the map scale is 1:25,000, then the geodetic distance is ___________m (rounded off to 2 decimal places).
In a Survey of India topographic map of scale 1:50,000, the contours are drawn conventionally at intervals of __________ m.
- Which one of the following map projections is NOT conformal?
- A map is prepared with a scale of 1:1000 and a contour interval of 1 m. If the distance between two adjacent contours on the map is 10 mm, the slope of the ground between the adjacent contours is
- The magnetic bearing of a line in the year 1990 was found to be N 40°30' W and magnetic declination was 3°30′ E. If the present magnetic declination is 2°10′ W, the magnetic bearing now (in reduced bearing system) would be
Questions Asked in GATE GE exam
Eight students (P, Q, R, S, T, U, V, and W) are playing musical chairs. The figure indicates their order of position at the start of the game. They play the game by moving forward in a circle in the clockwise direction.
After the 1st round, the 4th student behind P leaves the game.
After the 2nd round, the 5th student behind Q leaves the game.
After the 3rd round, the 3rd student behind V leaves the game.
After the 4th round, the 4th student behind U leaves the game.
Who all are left in the game after the 4th round?
The 12 musical notes are given as \( C, C^\#, D, D^\#, E, F, F^\#, G, G^\#, A, A^\#, B \). Frequency of each note is \( \sqrt[12]{2} \) times the frequency of the previous note. If the frequency of the note C is 130.8 Hz, then the ratio of frequencies of notes F# and C is:
Here are two analogous groups, Group-I and Group-II, that list words in their decreasing order of intensity. Identify the missing word in Group-II.
Abuse \( \rightarrow \) Insult \( \rightarrow \) Ridicule
__________ \( \rightarrow \) Praise \( \rightarrow \) Appreciate
- Had I learnt acting as a child, I ________ a famous film star.
Select the most appropriate option to complete the above sentence. Figure below shows the scatterplot of training pixels of water (w), sand (s), forest (f) and commercial (c) in bands 1 and 2. Pixel ‘A’ having digital number 4 and 6 in band 1 and band 2, respectively, is to be classified using k-nearest neighbor classifier having the value of k equal to 5. The assigned class for the pixel ‘A’ is ____________
- GATE GE - 2025
- General Science