Question

The contour interval depends on: (A) time and expanse of field and office work, (B) purpose and extent of survey, (C) scale of plan and nature of country, (D) contour characteristics, (E) interpolation of contours. Choose the correct answer from the options given below:

• A. (B), (C) and (D) only
• B. (A), (B) and (C) only
• C. (C), (D) and (E) only
• D. (A), (C) and (D) only

Hint:

Remember that contour interval is inversely proportional to the map scale and directly proportional to the flatness of the terrain.
Flat land needs a small interval (e.g., \(0.25\text{ m}\)), while steep mountains need a large interval (e.g., \(5\text{ m}\)).

Answer 1

The Correct Option is B