1
NDA 2015 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
A straight line x = y + 2 touches the circle 4(x2 + y2) = r2. The value of r is
A
$$\sqrt 2 $$
B
2$$\sqrt 2 $$
C
2
D
1
2
NDA 2015 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If the centre of the circle passing through the origin is (3, 4), then the intercepts cut-off by the circle on X-axis and Y-axis respectively, are
A
3 units and 4 units
B
6 units and 4 units
C
3 units and 8 units
D
6 units and 8 units
3
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
What is the radius of the circle passing through the point (2, 4) and having centre at the intersection of the lines x $$-$$ y = 4 and 2x + 3y + 7 = 0 ?
A
3 units
B
5 units
C
$$3\sqrt 3 $$ units
D
$$5\sqrt 2 $$ units
4
NDA 2016 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Consider the two circles $${(x - 1)^2} + {(y - 3)^2} = {r^2}$$ and $${x^2} + {y^2} - 8x + 2y + 8 = 0$$
What is the distance between the centres of the two circles?
A
5 units
B
6 units
C
8 units
D
10 units
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