Let A and B be two distinct points on th...

Let A and B be two distinct points on the parabola `y^2=4x`. If the axis of the parabola touches a circle of radius r having AB as its diameter, then find the slope of the line joining A and B .

`-1/r`

`1/r`

`2/r`

`-2/r`

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The correct Answer is:

C, D

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