If is the directrix of the hyperbola , then its corresponding focus is
- (A)
- (B)
- (C)✓ Correct
- (D)
Answer: (C)
Solution
Put the hyperbola in standard form, , so , and the eccentricity is . A directrix sits at , and the given is , the left directrix. Its matching focus is the left one, at .
JEE Main · 2019 · 10 Apr 2019 · Shift 2 · Single correct option