JEE Advanced · 2012 · 08 Apr 2012 · Paper 1 · Three Dimensional Geometry

WhatsApp Email
The point is the intersection of the straight line joining the points and with the plane . If is the foot of the perpendicular drawn from the point to , then the length of the line segment is
  1. (A)✓ Correct
  2. (B)
  3. (C)2
  4. (D)

Answer: (A)

Solution

The line has direction ratios and parametric form . Substituting into the plane equation: gives , so . The vector has magnitude . The angle between and is (from their dot product). Since is the foot of perpendicular from to , we have .

JEE Advanced · 2012 · 08 Apr 2012 · Paper 1 · Single correct option

More JEE Advanced questions on Three Dimensional Geometry

  1. Let P be the plane such that it contains the straight line and is perpendicular to the plane . Let be the plane which passes through the point and is parallel to . T …
    JEE Advanced 2026View solution →
  2. Let L be the straight line joining the points P(1,2, -1) and Q(2,3,1). Let S be the foot of the perpendicular drawn from the point to the line L. Another line passing through R intersects L at a point T such that the point S divides the line segment PT intern …
    JEE Advanced 2026View solution →
  3. Let be the line of intersection of the planes given by the equations

    Let be the line passing through the point and parallel to . Let denote the plane given by the equation …
    JEE Advanced 2025View solution →
  4. A straight line drawn from the point , parallel to the line , intersects the plane at the point . Another straight line which passes through and is perpendicular to the plane intersects the plan …
    JEE Advanced 2024View solution →
  5. Let denote the three-dimensional space. Take two points and .
    Let dist (X, Y) denote the distance between two points X and Y in . Let …
    JEE Advanced 2024View solution →
  6. Let be such that the lines and intersect. Let b …
    JEE Advanced 2024View solution →