A chord PQ is a normal to the parabola y2 = 4ax at P and PQ subtends right angle at the vertex. then SQSP IS

Book Online Demo

Check Your IQ

Try Test

Courses

Dropper NEET Course Dropper JEE Course Class - 12 NEET Course Class - 12 JEE Course Class - 11 NEET Course Class - 11 JEE Course Class - 10 Foundation NEET Course Class - 10 Foundation JEE Course Class - 10 CBSE Course Class - 9 Foundation NEET Course Class - 9 Foundation JEE Course Class -9 CBSE Course Class - 8 CBSE Course Class - 7 CBSE Course Class - 6 CBSE Course

Offline Centres

A chord PQ is a normal to the parabola y² = 4ax at P and PQ subtends right angle at the vertex. then $\frac{SQ}{SP}$ IS

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!

An Intiative by Sri Chaitanya

answer is C.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

$\begin{array}{l} G i v e n P Q i s a n o r m a l c h o r d a t t_{1} a n d t_{2} a n d a l s o s u b t e n d s r i g h t a n g l e a t t h e v e r t e x t h e n \\ t_{2} = - t_{1} - \frac{2}{t_{1}} a n d t_{1} t_{2} = - 4 \\ \Rightarrow t_{1} = \sqrt{2} \Rightarrow t_{2} = \frac{- 4}{\sqrt{2}} = - 2 \sqrt{2} \\ \Rightarrow \frac{SQ}{SP} = \frac{a + {at}_{2}^{2}}{a + {at}_{1}^{2}} = \frac{9}{3} = 3 \end{array}$