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If a normal subtends a right angle at th...

If a normal subtends a right angle at the vertex of a parabola `y^(2)=4ax` then its length is

A

`sqrt(5)a`

B

`3sqrt(5)a`

C

`5sqrt(5)a`

D

`7sqrt(5)`

Text Solution

Verified by Experts

The correct Answer is:
C
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