Home
Class 12
MATHS
A variable chord PQ of the parabola y^(2...

A variable chord PQ of the parabola `y^(2) = 4x` is drawn parallel to the line y = x. If the parameters of the points P & Q on the parabola are p & q respectively, show that p + q = 2. Also show that the locus of the point of intersection of the normals at P & Q is 2x - y = 12.

Promotional Banner

Topper's Solved these Questions

  • PARABOLA

    MOTION|Exercise EXERCISE - IV|33 Videos
  • PARABOLA

    MOTION|Exercise EXERCISE - II|17 Videos
  • MONOTONOCITY

    MOTION|Exercise Exercise - 4 ( Level-II ) Previous Year (Paragraph)|2 Videos
  • PERMUTATION AND COMBINATION

    MOTION|Exercise EXAMPLE|23 Videos

Similar Questions

Explore conceptually related problems

A variable chord PQ of the parabola y^(2)=4x is down parallel to the line y=x. If the parameters of the points y=x .If the parabola be p and q respectively then p+q is equal to:

A variable chord PQ of the parabola y^(2)=4ax is drawn parallel to the line y = x if the parameter of the points P and Q on the parabola be t_(1)andt_(2) respectively and then prove that t_(1)+t_(2)=2 . Also show that the locus of the point of intersection of the normals at P and Q is 2x - y = 12a.

The ordinates of points P and Q on the parabola y^2=12x are in the ration 1:2 . Find the locus of the point of intersection of the normals to the parabola at P and Q.

If a chord PQ of the parabola y^(2)=4ax subtends a right angle at the vertex,show that the locus of the point of intersection of the normals at P and Q is y^(2)=16a(x-6a)

If the distances of two points P and Q from the focus of a parabola y^(2)=4x are 4 and 9 respectively,then the distance of the point of intersection of tangents at P and Q from the focus is

A variable chord PQ of the parabola y=4x^(2) subtends a right angle at the vertex. Then the locus of points of intersection of the tangents at P and Q is

If tangents be drawn from points on the line x=c to the parabola y^2=4x , show that the locus of point of intersection of the corresponding normals is the parabola.

MOTION-PARABOLA-EXERCISE - III
  1. From vertex O ofthe parabola y^2=4ax perpendicular is drawn at a tange...

    Text Solution

    |

  2. Let P be a point on the parabola y^(2) - 2y - 4x+5=0, such that the ta...

    Text Solution

    |

  3. Two tangents to the parabola y^(2) = 8x meet the tangent at its vertex...

    Text Solution

    |

  4. Show that the normals at the points (4a, 4a) & at the upper end of t...

    Text Solution

    |

  5. In the parabola y^(2) = 4ax, the tangent at the point P, whose absciss...

    Text Solution

    |

  6. Prove that the locus of the middle point of portion of a normal to y^(...

    Text Solution

    |

  7. Three normals to y^2=4x pass through the point (15, 12). Show that one...

    Text Solution

    |

  8. Normals are drawn from a point P with slopes m1,m2 and m3 are drawn fr...

    Text Solution

    |

  9. Prove that, the normal to y^(2) = 12x at (3,6) meets the parabola agai...

    Text Solution

    |

  10. P & Q are the points of contact of the tangents drawn from the point T...

    Text Solution

    |

  11. A variable chord PQ of the parabola y^(2) = 4x is drawn parallel to th...

    Text Solution

    |

  12. Show that the normals at two suitable distinct real points on the para...

    Text Solution

    |

  13. Let S is the focus of the parabola y^(2) = 4ax and X the foot of the d...

    Text Solution

    |

  14. Prove that the parabola y^(2) = 16x and the circle x^(2) + y^(2) - 40x...

    Text Solution

    |

  15. .Find the equation ofthe circle which passes through the focus ofthe p...

    Text Solution

    |

  16. A fixed parabola y^(2) = 4ax touches a variable parabola. Find the equ...

    Text Solution

    |

  17. Show that an infinite number of triangles can be inscribed in either o...

    Text Solution

    |

  18. From the point P(h, k) three normals are drawn to the parabola x^(2) =...

    Text Solution

    |

  19. From the point P(h, k) three normals are drawn to the parabola x^(2) =...

    Text Solution

    |

  20. From the point P(h, k) three normals are drawn to the parabola x^(2) =...

    Text Solution

    |