If the locus of middle of point of contact of tangent drawn to the parabola and foot of perpendicular drawn from its focus to the tangents is a conic then length of latus rectum of this conic is |
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a) |
b) |
9 |
c) |
18 |
d) |

If the locus of middle of point of contact of tangent drawn to the parabola and foot of perpendicular drawn from its focus to the tangents is a conic then length of latus rectum of this conic is |
|||||||

a) |
b) |
9 |
c) |
18 |
d) |

1 Answer

127 votes

**(b)**

Let middle point of and be ( )

and

Locus of is

As

127 votes

127