Published by:
CGP EDU Academic Team
Published on: August 14, 2026
If b and c are the length of the segments of and focal chord of a parabola y 2 = 4ax. Then the length of the semi-latus rectum is -
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
From theory, L.R.=4l 1 l 2 /l 1 +l 2
∴ L.R./2=2 λ 1 λ 2 / λ 1 + λ 2
i.e. semi-latus rectum = 2bc/(b+c)
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