Conic Sections · JEE Main previous year questions

2010 1 question

1. Q82010 · 25 Apr 2010 · Shift 1

   If two tangents drawn from a point $P$ to the parabola $y^2=4x$ are at right angles, then the locus of $P$ is

   1. A.$2x+1=0$
   2. B.$x=-1$
   3. C.$2x-1=0$
   4. D.$x=1$
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   Answer: B