jee-advanced 2001 Q10

jee-advanced · India · screening Circles Tangent Lines and Tangent Lengths

10. The equation of the common tangent touching the circle $( x - 3 ) 2 + y 2 = 9$ and the parabola $y 2 = 4 x$ above the $x$-axis is :
(A) $\sqrt { } 3 y = 3 x + 1$
(B) $\sqrt { } 3 y = - ( x + 3 )$
(C) $\sqrt { } 3 y = x + 3$
(D) $\sqrt { } 3 y = - ( 3 x + 1 )$

10. The equation of the common tangent touching the circle $( x - 3 ) 2 + y 2 = 9$ and the parabola $y 2 = 4 x$ above the $x$-axis is :\\
(A) $\sqrt { } 3 y = 3 x + 1$\\
(B) $\sqrt { } 3 y = - ( x + 3 )$\\
(C) $\sqrt { } 3 y = x + 3$\\
(D) $\sqrt { } 3 y = - ( 3 x + 1 )$\\

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