Open curve is a curve which does not cut itself is called an open curve .

Open curves

Closed curves a curve which cuts itself is called a closed curve.

Simple closed curve a curve having the same beginning and ending point and which does not cross itself is called a simple closed curve.

Which one of the following figures is an open curve?

Which one of the following figures is an open curve ?

A simple closed curve does not cross itself and its ends are joined. .How many points lie in the interior of the curve?

Which does not affect oxy - haemoglobin curve:

Simple curve a curve is a simple curve if it does not cross itself.

Which of the following is/are not the main difference between electric lines of force and magnetic lines of force ? (1) Electric lines of force are closed curves whereas magnetic lines of force are open curves. (2) Magnetic lines of force cut each other whereas electric lines of force do not cut. (3) Electric lines of force cut each other whereas magnetic lines of force do not cut. (4) Electric lines of force are open curves whereas magnetic lines of force are closed curves