JEE Advanced2006MathematicsParabolaActual
Paragraph: Read the following passage and answer the questions. Let A B C D be a square of side length 2 units. C₂ is the circle through vertices A, B, C, D and C₁ is the circle touching all the sides of square A B C D . L is the line through A . Question: A line M through A is drawn parallel to B D . Points S moves such that its distances from the line B D are the vertex A are equal. If locus of S cuts M at T₂ and T
Options
- A1 2 sq unit
- B2 3 sq unit
- C1 sq unit
- D2 sq unit
Correct answer
C. 1 sq unit
Step-by-step solution
A G= 2 A T₁=T₁ G= 1 2 as A is the focus, T₁ is the vertex and B D is the directrix of parabola. Also, T₂ T₃ is latus rectum aligned & T₂ T₃=4 1 2 & Area of T₁ T₂ T₃= 1 2 1 2 4 2 =1 sq unit aligned