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A regular cone is placed on V.P on its base a section plane is parallel to H.P and section plane is 2cm away from the axis the section will be ____________

(a) ellipse

(b) hyperbola

(c) circle

(d) triangle

I had been asked this question in unit test.

This key question is from Sections of Cones in division Section of Solids of Engineering Drawing

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Right choice is (b) hyperbola

The explanation is: If a cone made to cut by a plane parallel to its axis and some distance away from it the section formed is hyperbola. If the section plane is perpendicular to axis the section is circle. If section plane passes through apex the section formed is a triangle.

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