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If the parabola y^(2)=ax passes through ...

If the parabola `y^(2)=ax` passes through (1, 2) then the equation of the directrix is

A

x+1=0

B

x+2=0

C

x+3=0

D

x+4=0

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The correct Answer is:
A
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AAKASH SERIES-PARABOLA-PRACTICE EXERCISE
  1. Find the equation of the parabola whose axis is parallel to Y-axis and...

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  2. If the focus is (1,-1) and the directrix is the line x+2y-9=0, the ver...

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  3. If the parabola y^(2)=ax passes through (1, 2) then the equation of th...

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  4. The length of the latus rectum of the parabola 4y^(2)+12x-20y+67=0 is

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  5. If the vertex of the parabola y = x^(2)-8x+c lies on x-axis then the v...

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  6. A ray of light moving parallel to x-axis gets reflected from a parabol...

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  7. An equilateral triangle is Inscribed in parabola y^(2) = 4ax whose one...

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  8. Angle made by double ordinate of length 24 of the parabola y^(2)= 12x ...

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  9. Length of the double ordinateof the parabola y^(2) = 4x, at a distance...

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  10. Point of contact of y=1-x w.r.t. y^(2)-y+x=0 is

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  11. The equation of the tangent to the parabola y^(2)=4x at the end of the...

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  12. Point on the parabola y^(2)=8x the tangent at which makes an angle (pi...

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  13. Equation of common tangent to y^(2)=32x and x^(2)=108 y is

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  14. The slope of tangents drawn from a point (4,10) to the parabola y^(2)=...

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  15. Find the angle between tangents drawn from P(2, 3) to the parabola y^(...

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  16. Angle between tangents drawn from (0,-a) to parabola x^(2) =4ay is

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  17. The angle between the tangents to the parabola y^(2)=4ax at the points...

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  18. The locus of the point of intersection of two tangents to the parabola...

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  19. The locus of point of intersection of tangents to y^(2)=4ax which incl...

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  20. The midpoint of the chord 2x-y-2=0 of the parabola y^(2)=8x is

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