The distance between the foci of an ellipse is 16 and eccentricity is 1/2.The length of the major axis of ellipse is
8
64
16
32
If the line y = mx + k touches the parabola x2 = 4ay, then the value of k is
a/m
am
am2
-am2
The directrix of the parabola y2 = 16x is
x = - 4
y = - 4
x = 4
y = 4
If the major axis of an ellipse is 3 times its minor axis, then its eccentricity is
2/3
√2/3
2√2/3
4√2/3
The equation of the director circle of the hyperbola is
x2 + y2 = 4
x2 + y2 = 12
x2 + y2 = 16
x2 + y2 = 20
The tangents drawn at the extremities of a focal chord of a parabola.
Are parallel
Intersect on the directrix
Intersect at angle of 45o
Intersect on the tangent at the vertex
The co-ordinates of the focus of the parabola x2 = 6y is.
(0 , 0)
(3, 0)
(0 , 3/2)
(0 , 5)
The focus of the parabola y2 - 8x - 32 = 0 is
(-2, 0)
(0 , 2)
(4 , 0)
(2 , 0)
The equation of directrix of parabola y2 = 12 x is
3
-3
4
-4
The length of latus rectum of the parabola x2 = - 16y is
- 16
- 4
