Let the foci of the ellipse and the hyperbola coincide. Then the length of the latus rectum of the hyperbola is:-
- (A)
- (B)
- (C)
- (D)✓ Correct
Answer: (D)
Solution
For the ellipse , , , so , giving foci at .
For the hyperbola , rewrite as . So , .
For hyperbola, . Since foci coincide, , so , giving .
Latus rectum of hyperbola = .
For the hyperbola , rewrite as . So , .
For hyperbola, . Since foci coincide, , so , giving .
Latus rectum of hyperbola = .
JEE Main · 2022 · 25 Jul 2022 · Shift 2 · Single correct option