If the midpoint of a chord of the ellipse is , and the length of the chord is , then is :
- (A)18
- (B)22✓ Correct
- (C)26
- (D)20
Answer: (B)
Solution
For the ellipse , the chord with midpoint satisfies :
With :
Substitute into the ellipse equation:
So or , giving points and .
So .
With :
Substitute into the ellipse equation:
So or , giving points and .
So .

JEE Main · 2025 · 28 Jan 2025 · Shift 2 · Single correct option