The eccentricity 'e' of a parabola is
>1
<1
1
0
The locus of the points which are equidistance from (-a , 0) and x = a is
y2 = 4ax
y2 = -4ax
x2 + 4ay = 0
x2 - 4ay = 0
The tangents at the points (at21, 2at1), (at22, 2at2) on the parabola y2 = 4ax are at right angles if
t1t2 = -1
t1t2 =1
t1t2 = 2
t1t2 = -2
If the line 3x - 4y + 5 = 0 is a tangent to the parabola y2 = 4ax, then a is equal to
15/16
5/4
-4/3
-5/4
The vertex of the parabola y2 + 6x - 2y + 13 = 0 is
(1, -1)
(-2, 1)
(3/2, 1)
(-7/2 ,1)
If (at2, 2at) are the co-ordiantes of one end of a focal chord of the parabola y2 = 4ax, then the co-ordinates of the other end are
(at2, -2at)
(-at2, -2at)
(a/t2 , 2a/t)
(a/t2, -2a/t)
Find the equation of the parabola with focus (2, 0) and directrix x = -2
y2 = 16x
y2 = 8x
y2 = 12x
None of these
The vertex of the parabola y2 = 4a (x - a) is
(a, 0)
(0, a)
(0, 0)
The latus rectum of the parabola x2 - 4x - 2y - 8 = 0 is.
8
4
2
The vertex of the parabola y2 = 4 ( x + 1)
(0, 1)
(0 , -1)
(1, 0)
(-1, 0)
