1
WB JEE 2010
+1
-0.25

The straight line x + y $$-$$ 1 = 0 meets the circle x2 + y2 $$-$$ 6x $$-$$ 8y = 0 at A and B. Then the equation of the circle of which AB is a diameter is

A
$${x^2} + {y^2} - 2y - 6 = 0$$
B
$${x^2} + {y^2} + 2y - 6 = 0$$
C
$$2({x^2} + {y^2}) + 2y - 6 = 0$$
D
$$3({x^2} + {y^2}) + 2y - 6 = 0$$
2
WB JEE 2011
+1
-0.25

If the straight line y = mx lies outside of the circle x2 + y2 $$-$$ 20y + 90 = 0, then the value of m will satisfy

A
m < 3
B
| m | < 3
C
m > 3
D
| m | > 3
3
WB JEE 2011
+1
-0.25

The locus of the centre of a circle which passes through two variable points (a, 0), ($$-$$a, 0) is

A
x = 1
B
x + y = a
C
x + y = 2a
D
x = 0
4
WB JEE 2011
+1
-0.25

The intercept on the line y = x by the circle x2 + y2 $$-$$ 2x = 0 is AB. Equation of the circle with AB as diameter is

A
x2 + y2 = 1
B
x(x $$-$$ 1) + y(y $$-$$ 1) = 0
C
x2 + y2 = 2
D
(x $$-$$ 1) (x $$-$$ 2) + (y $$-$$ 1) (y $$-$$ 2) = 0
WB JEE Subjects
Physics
Mechanics
Electricity
Optics
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Coordinate Geometry
Calculus
EXAM MAP
Joint Entrance Examination