The straight line joining any point on the parabola to the vertex and perpendicular from the focus to the tangent at intersect at then the equation of the locus of is |
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a) |
b) |
c) |
d) |

The straight line joining any point on the parabola to the vertex and perpendicular from the focus to the tangent at intersect at then the equation of the locus of is |
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a) |
b) |
c) |
d) |

1 Answer

127 votes

**(b)**

Tangent at point is

Line perpendicular to Eq. (i) passes through ( ,0)

or or (ii)

Equation of

or (iii)

From Eqs. (ii) and (iii), eliminating , we get

Or

127 votes

127