jee-main 2019 Q71

jee-main · India · session1_10jan_shift1 Circles Intersection of Circles or Circle with Conic

If the parabolas $y ^ { 2 } = 4 b ( x - c )$ and $y ^ { 2 } = 8 a x$ have a common normal, then which one of the following is a valid choice for the ordered triad $( a , b , c )$
(1) $( 1,1,3 )$
(2) $\left( \frac { 1 } { 2 } , 2,0 \right)$
(3) $\left( \frac { 1 } { 2 } , 2,3 \right)$
(4) All of above

If the parabolas $y ^ { 2 } = 4 b ( x - c )$ and $y ^ { 2 } = 8 a x$ have a common normal, then which one of the following is a valid choice for the ordered triad $( a , b , c )$\\
(1) $( 1,1,3 )$\\
(2) $\left( \frac { 1 } { 2 } , 2,0 \right)$\\
(3) $\left( \frac { 1 } { 2 } , 2,3 \right)$\\
(4) All of above

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