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JEE MATHEMATICS MCQ: PARABOLA

1 Easy

1 of 1

Application +4 | -1

If

V

and

S

are respectively the vertex and focus of the parabola

y^2+6 y+2 x+5=0

, then

S V=

View answer and explanation

Correct option: B

1 / 2

Option B (

1/2

) is correct because the distance between the vertex and focus is one-fourth of the latus rectum length.

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The equation of a common tangent to the parabolas

y=x^2

y=-(x-2)^2

P

moves such that slope of one tangent drawn from it to parabola

y^2=16 x

is four times the slope of other tangent, then the length of latus rectum of the conic represented by locus of

P

P,Q,R

be three points on parabola

{y^2} = 4x

P

R

Q

, then the locus of the mid-point of the chord

PR

is a parabola whose vertex is at The tangents at the end points of any chord through

(1,0)

to the parabola

y^2+4 x=8

intersect The focus of the parabola

x^2=-16 y

I

denotes the semi-latusrectum of the parabola

{y^2} = 4ax

SP

SQ

denote the segments of any focal chord

PQ,S

being the focus, then

SP,l

SQ

are in the relation