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The line y=2 x+k is a normal to the para...

The line `y=2 x+k` is a normal to the parabola `y^(2)=4 x,` then `k=`

A

12

B

-12

C

10

D

-10

Text Solution

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The correct Answer is:
B
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HIMALAYA PUBLICATION-PARABOLA-QUESTION BANK
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  3. The line y=2 x+k is a normal to the parabola y^(2)=4 x, then k=

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  4. The equation of the normal to the parabola y^(2)=4 x which passes thro...

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  5. Equation of the normal of y^(2)=20 x at (5,10) is

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  6. The tangent to the parabola y^(2)=8 x parallel to the line 2 y+x=0 is

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  7. The line y=2 x-12 is a normal to y^(2)=4 x at the point

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  8. Equation of the normal to the parabola y^(2)=4 x which is perpendicula...

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  9. If y=2 x+c is a tangent to the parabola y^(2)=16 x then c=

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  10. The line x+y=k touches the parabola y=x-x^(2) if k=

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  11. The line y=2 x-12 is a normal to y^(2)=4 x at the point

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  12. Focus of the parabola y^(2)=16 x is at

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  13. The point of intersection of the tangents at the ends of the laturs re...

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  14. If 2 x+y+a=0 is a focal chord of the parabola y^(2)+8 x=0 then a=

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  15. If (x(1), y(1)) and (x(2), y(2)) are the ends of the focal chord of y^...

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  16. The point on the parabola y^(2)=8 x whose distance from the focus is 8...

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  18. The number of tangents that can be drawn from (3,2) to the parabola y^...

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  19. The product of the abscissae of the extremities of a focal chord of a ...

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  20. The equation of the common tangent to the parabolas y^(2)=4 x and x^(2...

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