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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 .

A

`-1/r`

B

`1/r`

C

`2/r`

D

`-2/r`

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The correct Answer is:
C, D
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ARIHANT MATHS ENGLISH-PARABOLA-Exercise (Questions Asked In Previous 13 Years Exam)
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  10. Let PQ be a focal chord of the parabola y^(2)=4ax. The tangents to the...

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  11. Let PQ be a focal chord of the parabola y^(2)=4ax. The tangents to the...

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  15. Let a, r, s, t be non-zero real numbers. Let P(at^(2),2at),Q(ar^(2),2a...

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  16. Let O be the vertex and Q be any point on the parabola,x^2=""8y . I...

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  19. Let P and Q be distinct points on the parabola y^2 = 2x such that a c...

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