1
WB JEE 2008
+1
-0.25

The latus rectum of an ellipse is equal to one-half of its minor axis. The eccentricity of the ellipse is

A
$${1 \over {\sqrt 6 }}$$
B
$${{\sqrt 3 } \over 2}$$
C
$${{\sqrt 3 } \over 4}$$
D
$${1 \over 2}$$
2
WB JEE 2009
+1
-0.25

The coordinates of the focus of the parabola described parametrically by x = 5t2 + 2, y = 10t + 4 are

A
(7, 4)
B
(3, 4)
C
(3, $$-$$4)
D
($$-$$7, 4)
3
WB JEE 2010
+1
-0.25

If t1 and t2 be the parameters of the end points of a focal chord for the parabola y2 = 4ax, then which one is true?

A
t1t2 = 1
B
$${{{t_1}} \over {{t_2}}} = 1$$
C
t1t2 = $$-$$1
D
t1 + t2 = $$-$$1
4
WB JEE 2011
+1
-0.25

The vertex of the parabola y2 + 6x $$-$$ 2y + 13 = 0 is

A
(1, $$-$$1)
B
($$-$$2, 1)
C
$$\left( {{3 \over 2},1} \right)$$
D
$$\left( { - {7 \over 2},1} \right)$$
WB JEE Subjects
Physics
Mechanics
Electricity
Optics
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Coordinate Geometry
Calculus
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