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If 2x+y+lamda=0 is a normal to the parab...

If `2x+y+lamda=0` is a normal to the parabola `y^(2)=-8x`, then `lamda` is

A

-16

B

-8

C

-24

D

24

Text Solution

Verified by Experts

The correct Answer is:
D
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OBJECTIVE RD SHARMA ENGLISH-PARABOLA-Exercise
  1. A set of parallel chords of the parabola y^2=4a x have their midpoint ...

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  2. Find the point on the curve y^(2)=ax the tangent at which makes an ang...

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  3. If 2x+y+lamda=0 is a normal to the parabola y^(2)=-8x, then lamda is

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  4. Find the angle at which the parabolas y^2=4x and x^2=32 y intersect.

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  5. The normal at (a,2a) on y^2 = 4ax meets the curve again at (at^2, 2at)...

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  6. If a chord which is normal to the parabola at one end subtend a right ...

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  7. Find the equations of the normals at the ends of the latus- rectum of ...

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  8. Normal at the point P(a p^2,2a p) meets the parabola y^2=4a x again at...

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  9. If the normals at points t1 and t2 meet on the parabola, then (a) t1...

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  10. If the normals at two points P and Q of a parabola y^2 = 4ax intersect...

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  11. Find the angle between the tangents drawn from the origin to the pa...

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  12. The angle between the tangents drawn from the point (-a, 2a) to y^2=4a...

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  13. The angle between the tangents to the parabola y^2=4a x at the points ...

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  14. P(-3, 2) is one end of focal chord PQ of the parabola y^2+4x+4y=0. The...

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  15. If x=my+c is a normal to the parabola x^(2)=4ay, then the value of c, ...

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  16. Find the equations of the tangent to the given curve at the indicated...

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  17. The tangents at the points (at(1)^(2), 2at(1)), (at(2)^(2), 2at(2)) on...

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  18. If the vertex of the parabola y=x^(2)-8x+c lies on x-axis, then the va...

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  19. If the chord y = mx + c subtends a right angle at the vertex of the p...

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  20. The equation of the tangent at the vertex of the parabola x^(2)+4x+2y=...

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