Home
Class 12
MATHS
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+ 2y =0 `

B

` 2x-y=0`

C

` 2x +y=0 `

D

` x-2y =0 `

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • REVISION EXERCISE

    AAKASH SERIES|Exercise ELLIPSE|55 Videos

  • REVISION EXERCISE

    AAKASH SERIES|Exercise HYPERBOLA|46 Videos

  • REVISION EXERCISE

    AAKASH SERIES|Exercise SYSTEM OF CIRCLES|22 Videos

  • RANDOM VARIABLES

    AAKASH SERIES|Exercise Exercise 4.4|9 Videos

  • SEQUENCE AND SERIES

    AAKASH SERIES|Exercise Practice Exercise|71 Videos

Similar Questions

Explore conceptually related problems

If the parabola y^(2)=4ax passes through (-3,2) then the length of its latusrectum is

The parabola (y+1)^(2)=a(x-2) passes through point (1,-2). The equaiton of its directrix is

In the parabola y^(2)= 4ax the length of the chord passing through the vertex and inclined to the axis at pi//4

AAKASH SERIES-REVISION EXERCISE -PARABOLA
  1. If the normals at P and Q meet again on the parabola y^(2) =4ax then ...

    Text Solution

    |

  2. The shortest distance between the line y-x =1 and the curve x=y^2 is

    Text Solution

    |

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

    Text Solution

    |

  4. A set of parallel chords of the parabola y^(2) =4ax have their mid-po...

    Text Solution

    |

  5. If the angular bisectors of the coordinates axes cut the parabola y^(2...

    Text Solution

    |

  6. If the straight line y=mx+c is parallel to the axis of the parabola y^...

    Text Solution

    |

  7. The set of point on the axis of the parabola y^(2) -2y -4x + 5=0 from ...

    Text Solution

    |

  8. Given :A circle 2x^(2) +2y^(2) =5 and a parabola y^(2) =4 sqrt5 x. ...

    Text Solution

    |

  9. If a ne0 and the line 2bx+3cy+4d =0 passes through the points of inter...

    Text Solution

    |

  10. The equation of the directrix of the parabola y^(2)+4y+4x+2=0 is

    Text Solution

    |

  11. The locus of the vertices of the family of parabolas y = (a^(3)x^(2))/...

    Text Solution

    |

  12. The equation of the common tangent to x^(2)+y^(2)=2a^(2)"and" y^(2)=8a...

    Text Solution

    |

  13. The normal at a point (bt1^(2) , 2bt1) on a parabola meets the parabo...

    Text Solution

    |

  14. The sloope of the line touching both the parabolas y^(2) =4x and x^(2)...

    Text Solution

    |

  15. Statement 1: The slope of the tangent at any point P on a parabola , w...

    Text Solution

    |

  16. Statement 1: The line x-2y =2 meets the parabola y^(2) +2x=0 only at ...

    Text Solution

    |

  17. The point of intersection of the normals to the parabola y^(2) =4x at ...

    Text Solution

    |

  18. Let L1 be the length of the common chord of the curves x^(2) +y^(2)...

    Text Solution

    |

  19. Two tangents are drawn from a point (-2,-1) to the curve y^(2) =4x, ...

    Text Solution

    |

  20. A chord is drawn through the focus of the parabola y^(2) =6x such tha...

    Text Solution

    |