The locus of the mid points of the chords of the hyperbola , which touch the parabola , is:
- (A)
- (B)✓ Correct
- (C)
- (D)
Answer: (B)
Solution
Let be the midpoint of the chord, with and . For the chord with this midpoint is :
A line touches when . Here and , so the tangency condition is
The locus of the midpoints is .
A line touches when . Here and , so the tangency condition is
The locus of the midpoints is .
JEE Main · 2021 · 26 Aug 2021 · Shift 2 · Single correct option