If a directrix of a hyperbola centered at the origin and passing through the point is and its eccentricity is , then
- (A)
- (B)✓ Correct
- (C)
- (D)
Answer: (B)
Solution
Take the hyperbola . Passing through gives . The directrix equals , so , and for a hyperbola . Substituting these in, , which clears to .
JEE Main · 2019 · 10 Apr 2019 · Shift 1 · Single correct option