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If two tangents drawn from a point p to the parabola `y^(2)=4x` are at right angles then the locus of p is

A

`x=-1`

B

`2 x-1=0`

C

`x=1`

D

`2 x+1=0`

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The correct Answer is:
A
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  12. Let (x,y) be any point on the parabla y^(2)=4x let P be the point t...

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  13. If the parabola y^(2)=4 a x passes through (3,2) then the length of th...

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