Question

What are contours?

• A. Imaginary lines joining places which have the same atmospheric pressure above the sea level are called contours
• B. Imaginary lines joining places which have the same density above the sea level are called contours
• C. Imaginary lines joining places which have the same mass above the sea level are called contours
• D. Imaginary lines joining places which have the same height above the sea level are called contours

Answer 1

The correct option is D Imaginary lines joining places which have the same height above the sea level are called contours

Imaginary lines joining places which have the same height above the sea level are called contours.

A contour line of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. It is a plane section of the three-dimensional graph of the function f parallel to the x, y plane.