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CGP EDU Academic Team
Published on: August 14, 2026
The length of a focal chord of the parabola y2 = 4ax at a distance b from the vertex is c. Then
Text Solution
Verified by ExpertsThe correct answer is:
D
Chord joining two points t1 and t2 is
(t1 + t2)y = 2x + 2at1t2
= b ... (1)
a (t1 – t2)2 = c ... (2)
By using (1) and (2), eliminate t1 & t2
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