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Q. The double napped right circular cone is shown in the figure.
image
Match the notations used in the figure given in Column I with their meaning given in Column II and choose the correct option from the codes given below.
Column I Column II
A $V$ 1 Generator of cone
B $l$ 2 Slope of cone
c. $m$ 3 Vertex
4 Axis of cone

Conic Sections

Solution:

The point $V$ is called the vertex; the line $l$ is the axis of the cone; the rotating line is called a generator of the cone.