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If (at^(2) , 2at) be the coordinate of a...

If `(at^(2) , 2at)` be the coordinate of an extremity of a focal chord of the parabola `y^(2) =4ax,` then the length of the chord is-

A

`a(t- (1)/(t)) ^(2)`

B

`a(t+ (1)/(t))`

C

`a(t +(1)/(t))^(2)`

D

`a(t- (1)/(t))`

Text Solution

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The correct Answer is:
C
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