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A plane cuts a right circular cone to give a parabola when it is
Aparallel to a generating line
Bperpendicular to the axis
Csteeper than every generating line
Dpassing through the apex only
Answer & Solution
Correct answer: A. parallel to a generating line
If the cutting plane is parallel to exactly one generator of the cone, the section is open on one side and forms a parabola.
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