1
JEE Main 2019 (Online) 9th April Morning Slot
+4
-1
Out of Syllabus
If a tangent to the circle x2 + y2 = 1 intersects the coordinate axes at distinct points P and Q, then the locus of the mid-point of PQ is :
A
x2 + y2 – 4x2y2 = 0
B
x2 + y2 - 2xy = 0
C
x2 + y2 – 2x2y2 = 0
D
x2 + y2 - 16x2y2 = 0
2
JEE Main 2019 (Online) 8th April Evening Slot
+4
-1
Out of Syllabus
The tangent and the normal lines at the point ( $$\sqrt 3$$, 1) to the circle x2 + y2 = 4 and the x-axis form a triangle. The area of this triangle (in square units) is :
A
$${4 \over {\sqrt 3 }}$$
B
$${1 \over {\sqrt 3 }}$$
C
$${2 \over {\sqrt 3 }}$$
D
$${1 \over {3 }}$$
3
JEE Main 2019 (Online) 8th April Morning Slot
+4
-1
The sum of the squares of the lengths of the chords intercepted on the circle, x2 + y2 = 16, by the lines, x + y = n, n $$\in$$ N, where N is the set of all natural numbers, is :
A
210
B
160
C
320
D
105
4
JEE Main 2019 (Online) 12th January Evening Slot
+4
-1
If a circle of radius R passes through the origin O and intersects the coordinates axes at A and B, then the locus of the foot of perpendicular from O on AB is :
A
(x2 + y2)2 = 4R2x2y2
B
(x2 + y2) (x + y) = R2xy
C
(x2 + y2)2 = 4Rx2y2
D
(x2 + y2)3 = 4R2x2y2
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