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The length of the subtangent to the para...

The length of the subtangent to the parabola `y^(2)=16x` at the point whose abscissa is 4, is

A

2

B

4

C

8

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
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OBJECTIVE RD SHARMA ENGLISH-PARABOLA-Exercise
  1. Find the equation of the common tangent of y^2=4a x and x^2=4a y.

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  2. The equation of the common tangent touching the circle (x-3)^2+y^2=9 a...

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  3. The length of the subtangent to the parabola y^(2)=16x at the point wh...

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  4. if P is a point on parabola y^2=4ax such that subtangents and subnorm...

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  5. The normal to the parabola y^(2)=8ax at the point (2, 4) meets the par...

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  6. The graph represented by x=sin^2t, y=2cost is

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  7. The subtangent, ordinate and subnormal to the parabola y^2 = 4ax are i...

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  8. f the normal at the point P (at1, 2at1) meets the parabola y^2=4ax agu...

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  9. The equation of the parabola whose vertex is at(2, -1) and focus at(2,...

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  10. The ends of a line segment are P(1, 3) and Q(1,1), R is a point on th...

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  11. The vertex of the parabola y^2+6x-2y+13=0 is

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  12. The Cartesian equation of the directrix of the parabola whose parametr...

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  13. If the vertex of a parabola is (0, 2) and the extremities of latusrect...

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  14. A line L passing through the focus of the parabola (y-2)^(2)=4(x+1) in...

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  15. Let y=f(x) be a parabola, having its axis parallel to the y-axis, whic...

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  16. If two tangents drawn from the point (alpha,beta) to the parabola y^2=...

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  17. The angle between the tangents drawn form the point (3, 4) to the para...

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  18. set of values of m for which a chord of slope m of the circle x^2 + y^...

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  19. The mid-point of the line joining the common points of the line 2x-3y+...

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  20. Tangents PQ and PR are drawn to the parabola y^(2) = 20(x+5) and y^(2)...

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