Let be a directrix to an ellipse whose centre is at the origin and its eccentricity is . If is a point on this ellipse, then the equation of the normal to it at P is:
- (A)✓ Correct
- (B)
- (C)
- (D)
Answer: (A)
Solution
From the directrix with , , and gives , so the ellipse is . Writing gives , so . The normal at parameter is , and substituting , and gives .
JEE Main · 2020 · 04 Sep 2020 · Shift 2 · Single correct option