In a right circular cone , the cross-section made by a plane parallel to the base is a
(a) circle (b) frustyum of a cone (c) sphere (d) hemisphere

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Solution

When a plane parallel to the base of a cone cuts it, then a frustum and a smaller cone is formed.
The cross-section thus formed will be a circle.
Hence, the correct answer is option (a).

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In a right circular cone , the cross-section made by a plane parallel to the base is a (a) circle (b) frustyum of a cone (c) sphere (d) hemisphere

When a plane parallel to the base of a cone cuts it, then a frustum and a smaller cone is formed. The cross-section thus formed will be a circle. Hence, the correct answer is option (a).

In a right circular cone , the cross-section made by a plane parallel to the base is a
(a) circle (b) frustyum of a cone (c) sphere (d) hemisphere

When a plane parallel to the base of a cone cuts it, then a frustum and a smaller cone is formed.
The cross-section thus formed will be a circle.
Hence, the correct answer is option (a).