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The length of the perpendicular from the...

The length of the perpendicular from the focus of the parabola `y^(2)=8 x` onto the tangent at (2,-4) is

A

`2 sqrt(2)`

B

`3 sqrt(2)`

C

`4 sqrt(2)`

D

`sqrt(2)`

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The correct Answer is:
A
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HIMALAYA PUBLICATION-PARABOLA-QUESTION BANK
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  3. The length of the perpendicular from the focus of the parabola y^(2)=8...

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  4. Two tangents are drawn from the point (h, k) to the parabola y^(2)=4 x...

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  5. The length of the focal chord drawn to y^(2)=8 x, through the point wh...

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  6. The vertex of the parabola (y-2)^(2) = 16(x-1) is

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  7. Axis of the parabola x^(2)-4 x-4 y+10=0 is

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  8. The equation of the tangent to the parabola y^(2)=8 x making an angle ...

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  9. The equation of the tangent to the parabola y^(2)=4 x+5 parallel to th...

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  10. The equation of the tangent to the parabola (y-2)^(2)=8(x+1), which is...

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  11. If the focus of a parabola divides a focal chord of the parabola in s...

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  12. The focus of the parabola x^(2)-8x+2y+7=0 is

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  13. Length of focal of the parabola y^(2)=4ax making an angle alpha with t...

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  14. The axis of the parabola 9 y^(2)-16 x-12 y-57=0 is

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  15. Consider the equation of the parabola y^(2)+4ax=0 where a gt0 which o...

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  16. If x+y=k is a normal to the parabola y^(2)=12x then it touches the par...

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  17. Range of values of k for which the point (k-1) is exteriro to both ...

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  18. If P S P^(prime) is a focal chord of the parabola y^(2)=4 a x and S L ...

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  19. A triangle formed by the tangents to the parabola y^(2)=4 a x at the e...

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  20. If b and c are the length of the segments of any focal chord of a para...

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