1
JEE Main 2018 (Online) 15th April Evening Slot
+4
-1
The tangent to the circle C1 : x2 + y2 $$-$$ 2x $$-$$ 1 = 0 at the point (2, 1) cuts off a chord of length 4 from a circle C2 whose center is (3, $$-$$2). The radius of C2 is :
A
2
B
$$\sqrt 2$$
C
3
D
$$\sqrt 6$$
2
JEE Main 2018 (Online) 15th April Morning Slot
+4
-1
A circle passes through the points (2, 3) and (4, 5). If its centre lies on the line, $$y - 4x + 3 = 0,$$ then its radius is equal to :
A
2
B
$$\sqrt 5$$
C
$$\sqrt 2$$
D
1
3
JEE Main 2017 (Online) 9th April Morning Slot
+4
-1
The equation
Im $$\left( {{{iz - 2} \over {z - i}}} \right)$$ + 1 = 0, z $$\in$$ C, z $$\ne$$ i
represents a part of a circle having radius equal to :
A
2
B
1
C
$${3 \over 4}$$
D
$${1 \over 2}$$
4
JEE Main 2017 (Online) 9th April Morning Slot
+4
-1
A line drawn through the point P(4, 7) cuts the circle x2 + y2 = 9 at the points A and B. Then PA⋅PB is equal to :
A
53
B
56
C
74
D
65
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