The locus of the midpoints of the chord of the circle, which is tangent to the hyperbola, is :
- (A)
- (B)✓ Correct
- (C)
- (D)
Answer: (B)
Solution
A chord of with midpoint has equation , that is
A line touches when , so
Multiplying by gives , so the midpoints lie on the curve .
A line touches when , so
Multiplying by gives , so the midpoints lie on the curve .
JEE Main · 2021 · 16 Mar 2021 · Shift 1 · Single correct option