Question 19
In a right circular cone, the cross – section made by a plane parallel to the base is a
(A) circle
(B) frustum of a cone
(C) sphere
(D) hemisphere

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Solution

Option (B) is correct.
We know that, if a cone is cut by a plane parallel to the base of the cone, then the portion between the plane and base is called the frustum of the cone.

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\frac{h}{3}

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