Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The normals at 
on the parabola
, meet again on the parabola, then x 1 x 2 + y 1 y 2 =
Text Solution
Verified by ExpertsThe correct answer is:
B
If the normals at t 1 and t 2 intersect on the parabola, then t 1 t 2 = 2.
∴ ∴ x 1 x 2 + y 1 y 2 = 
= a 2 (t 1 .t 2 ) 2 + 4a 2 (t 1 .t 2 )
= 12a 2 = 108
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