Two straight lines are perpendicular to each other. One of them touches the parabola 
and the other touches 
. Their point of intersection lies on the line
a)
b)
c)
d)
Two straight lines are perpendicular to each other. One of them touches the parabola and the other touches . Their point of intersection lies on the line
a)
b)
c)
d)
Question ID - 56036 | SaraNextGen Top Answer
Two straight lines are perpendicular to each other. One of them touches the parabola and the other touches . Their point of intersection lies on the line
a)
b)
c)
d)
|
Two straight lines are perpendicular to each other. One of them touches the parabola |
|||||||
|
a) |
|
b) |
|
c) |
|
d) |
|
1 Answer
127 votes
Answer Key / Explanation : (c) -
(c)
Any tangent to 
is
(i)
Any tangent to 
which is perpendicular to Eq. (i) is
(ii)
Subtracting, we get
Or 
which is a locus of their point of intersection
127 votes
Answer Link
127