The parabola y^2 = 4x and the circle (x-...

The parabola `y^2 = 4x` and the circle `(x-6)^2 + y^2 = r^2` will have no common tangent if r is equal to

`rgtsqrt20`

`rltsqrt20`

`rgtsqrt18`

`rin(sqrt20,sqrt28)`

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FIITJEE-PARABOLA-ASSIGNMENT PROBLEMS (OBJECTIVE LEVEL - I)

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Centre of locus of point of intersection of tangent to y^2 = 4ax, if t...
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Two parabolas y^(2)=4a(x-lamda(1))andx^(2)=4a(y-lamda(2)) always touch...
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Parabolas (y-alpha)^(2)=4a(x-beta)and(y-alpha)^(2)=4a'(x-beta') will h...
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If the chord of contact of tangents from a point P(h, k) to the circle...
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The axis of a parabola is along the line y = x and the distance of its...
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If normal are drawn from a point P(h , k) to the parabola y^2=4a x , t...
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The equation of the line of the shortest distance between the parabola...
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The exhaustive set of values of k for which tangents drawn from the po...
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The locus of the point (sqrt(3h),sqrt(sqrt(3)k+2)) if it lies on the l...
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In a parabola y^(2)=4ax, two points P and Q are taken such that the ta...
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Statement - 1: The equation of common tangent to the parabola y^(2)=4x...
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