Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Advanced 2011Paper 2
Exam
JEE Advanced
Year
2011
Paper
Paper 2
Subject
Mathematics
Chapter
Circle

JEE Advanced 2011 · Paper 2 · Mathematics · Circle

The straight line 2 x-3 y=1 divides the circular region x^2+y^2 ≤ 6...

The straight line 2x−3y=12 x-3 y=1 divides the circular region x2+y2≤6x^2+y^2 \leq 6 into two parts. If S={(2,34),(52,34),(14,−14),(18,14)}S=\left\{\left(2, \frac{3}{4}\right),\left(\frac{5}{2}, \frac{3}{4}\right),\left(\frac{1}{4},-\frac{1}{4}\right),\left(\frac{1}{8}, \frac{1}{4}\right)\right\}, then the number of point(s) in SS lying inside the smaller part isThe straight line 2 x-3 y=1 divides the circular region x^2+y^2 ≤ 6 into two parts. If S=\ (2, (3)/(4)),((5)/(2),

Correct answer

2

Step-by-step solution

x^2+y^2 \leq 6andand2 x-3 y=1isshownas,Forthepointtolieintheshadedpart,originandthepointlieonoppositesideofstraightlineis shown as, For the point to lie in the shaded part, origin and the point lie on opposite side of straight lineL.<imgsrc="https://cdn−question−pool.getmarks.app/pyq/jeeadvanced/dVwnyTkUUvsDQ18fHYOVS4iDdvsVr−wqh05DruuYZs0.original.fullsize.png"><br>. <img src="https://cdn-question-pool.Quantrex.app/pyq/jee_advanced/dVwnyTkUUvsDQ18fHYOVS4iDdvsVr-wqh05DruuYZs0.original.fullsize.png"><br>\thereforeForanypointinshadedpartFor any point in shaded partL>0andforanypointinsidethecircleand for any point inside the circleS < 0.Now,for. Now, for\left(2, \frac{3}{4}\right) L: 2 x-3 y-1L:4−94−1=34>0L: 4-\frac{9}{4}-1=\frac{3}{4}>0andandS: x^2+y^2-6,,S:4+916−6<0S: 4+\frac{9}{16}-6 < 0\Rightarrow\left(2 \frac{3}{4}\right)liesinshadedpart.Forlies in shaded part. For\left(\frac{5}{2}, \frac{3}{4}\right) L: 5-9-1 < 0 \quad[neglect]For(14,−14)L:12+34−1>0}∴(14,−14)[neglect] For \left.\left(\frac{1}{4},-\frac{1}{4}\right) L: \frac{1}{2}+\frac{3}{4}-1>0\right\} \therefore\left(\frac{1}{4},-\frac{1}{4}\right) lies in the shaded part. For \left(\frac{1}{8}, \frac{1}{4}\right) L: \frac{1}{4}-\frac{3}{4}-1 < 0[neglect][neglect]\Rightarrow Only 2 points lie in the shaded part.
Practice Circle on Quantrex Academy →

More from Circle

Match each entry in List-I to the correct entry in List-II and choose the correct option.… JEE Advanced 2026Consider the circle C: x^2+y^2-6x-8y-11=0 . Let a variable chord AB of the circle C… JEE Main 2026Let C be a circle having centre in the first quadrant and touching the x -axis at a… JEE Main 2026Let the line x - y = 4 intersect the circle C: (x-4)^2 + (y+3)^2 = 9 at the points Q and… JEE Main 2026Let the centre of the circle x^2 + y^2 + 2gx + 2fy + 25 = 0 be in the first quadrant and… JEE Main 2026Let P be a moving point on the circle x^2 + y^2 - 6x - 8y + 21 = 0 . Then, the maximum… JEE Main 2026Suppose that two chords, drawn from the point (1, 2) on the circle x^2 + y^2 + x - 3y = 0… JEE Main 2026Let a circle pass through the origin and its centre be the point of intersection of two… JEE Main 2026Let a circle C have its centre in the first quadrant, intersect the coordinate axes at… JEE Main 2026Let the circle x^ 2 +y^ 2 =4 intersect x -axis at the points A(a, 0), a>0 and B(b, 0) .… JEE Main 2026Let y=x be the equation of a chord of the circle C_ 1 (in the closed half-plane x ≥ 0 )… JEE Main 2026Let S=\ z ∈ ℂ:|(z-6 i)/(z-2 i)|=1. and .|(z-8+2 i)/(z+2 i)|=(3)/(5)\ . Then ∑_ z ∈ ~s… JEE Main 2026Let a circle of radius 4 pass through the origin O, the points A(- 3 a, 0) and B(0,- 2 b)… JEE Main 2026If the points of intersection of the ellipses x^ 2 +2 y^ 2 -6 x-12 y+23=0 and 4 x^ 2 +2… JEE Main 2026Let the set of all values of r , for which the circles (x+1)^ 2 +(y+4)^ 2 =r^ 2 and x^ 2… JEE Main 2026If P is a point on the circle x^ 2 +y^ 2 =4, Q is a point on the straight line 5 x+y+2=0… JEE Main 2026 Full Circle list Circle JEE Maths PYQsJEE Mathematics PYQs All JEE Advanced PYQs