Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Advanced2008MathematicsStraight LinesActual

Consider L₁: 2 x+3 y+p-3=0 ; L₂: 2 x+3 y+p+3=0 where p is a real number and C: x^2+y^2+6 x-10 y+30=0 . Statement 1 If line L₁ is a chord of circle C , then line L₂ is not always a diameter of circle C . Statement 2 If line L₁ is a diameter of circle C , then line L₂ is not a chord of circle C .

Options

  1. AStatement 1 is true, Statement 2 is true, Statement 2 is a correct explanation for Statement 1.
  2. BStatement 1 is true, Statement 2 is true, Statement 2 is not a correct explanation for Statement 1.
  3. CStatement 1 is true, Statement 2 is false.
  4. DStatement 1 is false, Statement 2 is true

Correct answer

C. Statement 1 is true, Statement 2 is false.

Step-by-step solution

Equation of circle C is aligned (x+3)^2+(y-5)^2 & =9+25-30=4 (x+3)^2+(y-5)^2 & =2^2 Centre & =(3,-5) aligned If L₁ is diameter, then 2(3)+3(-5)+p-3=0 p=12 L₁ is 2 x+3 y+9=0 and L₂ is 2 x+3 y+15=0 Distance of centre of circle from L₂= | 2(3)+3(-5)+15 2^2+3^2 |= 6 13 < 2 [radius of circle] L₂ is a chord of circle C . Statement 2 is false.

Practice Straight Lines on Quantrex Academy →

More from Straight Lines

If a straight line drawn through the point of intersection of the lines 4x+3y-1=0 and 3x+4y-1=0 , meets the co-ordinate axes at the points P and Q, then the locus of the mid point 2026From the point (-1, -1) , two rays are sent making angles of 45° with the line x + y = 0 . These rays get reflected from the mirror x + 2y = 1 . If the equations of the reflected r 2026In an equilateral triangle PQR , let the vertex P be at (3, 5) and the side QR be along the line x + y = 4 . If the orthocentre of the triangle PQR is ( , ) , then 9( + ) is equal 2026Let P(3 , 2 ) , 0 , be a point on the ellipse x^2 9 + y^2 4 =1 , Q be a point on the circle x^2+y^2-14x-14y+82=0 and R be a point on the line x+y=5 such that the centroid of the tr 2026Let A,B be points on the two half-lines x- 3 |y|= , >0 at a distance of from their point of intersection P . The line segment AB meets the angle bisector of the given half-lines at 2026Let the line L₁ : x + 3 = 0 intersect the lines L₂ : x - y = 0 and L₃ : 3x + y = 0 at the points A and B , respectively. Let the bisector of the obtuse angle between the lines L₂ a 2026Let the vertex A of a triangle ABC be (1, 2) , and the mid-point of the side AB be (5, -1) . If the centroid of this triangle is (3, 4) and its circumcenter is ( , ) , then 21( + ) 2026Let the mid points of the sides of a triangle ABC be ( 5 2 , 7 ) , ( 5 2 , 3 ) and (4, 5) . If its incentre is (h, k) , then 3h + k is equal to : 2026 Full Straight Lines list All JEE Advanced PYQs