Q. 185.0( 1 Vote )

The length of the latus - rectum of the parabola 4y2 + 2x – 20y + 17 = 0 is
A. 3

B. 6

C. 1/2

D. 9

Answer :

Given equation of the parabola is 4y2 + 2x - 20y + 17 = 0



4y2 - 20y + 17 = - 2x





Comparing with standard form of parabola (y - a)2 = - 4b(x - c) we get,



We know that the that the length of the latus rectum is 4b.


The correct option is C

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Focal chord of parabolaFocal chord of parabolaFocal chord of parabola29 mins
Properties of tangents to parabolaProperties of tangents to parabolaProperties of tangents to parabola42 mins
Co-normal points on parabolaCo-normal points on parabolaCo-normal points on parabola42 mins
Lecture on Equation of ParabolaLecture on Equation of ParabolaLecture on Equation of Parabola59 mins
Properties of normal of parabolaProperties of normal of parabolaProperties of normal of parabola43 mins
Properties of normal of parabola | Interactive QuizProperties of normal of parabola | Interactive QuizProperties of normal of parabola | Interactive Quiz46 mins
Interactive Quiz on Equation of ParabolaInteractive Quiz on Equation of ParabolaInteractive Quiz on Equation of Parabola41 mins
Equation of tangent to parabola | Conic SectionEquation of tangent to parabola | Conic SectionEquation of tangent to parabola | Conic Section38 mins
Revise Co-normal points on parabola with questionsRevise Co-normal points on parabola with questionsRevise Co-normal points on parabola with questions44 mins
Equation of normal of parabola | Interactive Quiz TimeEquation of normal of parabola | Interactive Quiz TimeEquation of normal of parabola | Interactive Quiz Time44 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses