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[" (12.Is a point on the tangent to a parabola "y^(2)=4ax" at its point "P" .TL and TN are the perpendicularso "],[" the focal radius "SP" and the directrix of the parabola respectively.Then- "],[[" (A) "SL=2(TN)," (B) "3(SL)=2(TN)," (C) "SL=TN," (D) "2(SL)=3(TN)]]

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