If 
and 
are two focal chords of the parabola 
then the chord 
and 
intersect on
a)
Directrix
b)
Axis
c)
Tangent at vertex
d)
None of these
If and are two focal chords of the parabola then the chord and intersect on
a)
Directrix
b)
Axis
c)
Tangent at vertex
d)
None of these
Question ID - 55834 | SaraNextGen Top Answer
If and are two focal chords of the parabola then the chord and intersect on
a)
Directrix
b)
Axis
c)
Tangent at vertex
d)
None of these
|
If |
|||||||
|
a) |
Directrix |
b) |
Axis |
c) |
Tangent at vertex |
d) |
None of these |
1 Answer
127 votes
Answer Key / Explanation : (a) -
(a)
is a focal chord, then 
and
is a focal chord, then 
and 
Now equation of chord 
is
(i)
Chord 
is
Or 
(ii)
For their intersection, we subtract them and get
Or 
Hence, they interest on directrix
127 votes
Answer Link
127