Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The normals drawn at three points to a parabola y 2 = 8x are concurrent at (3,4). Then the product of the ordinates of the points is
Text Solution
Verified by ExpertsThe correct answer is:
D
Equation of normal to the parabola y+xt = 2at + at 3 . This passes through (3, 4)
∴ ∴ 4+3t = 4t + 2t 3 ⇒ ⇒ 2t
3 + t – 4 = 0.
∴ ∴ t 1 . t 2 .t 3 = 
(product of roots).
∴ ∴ 
= 
= 8.8.2 = 128
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