JEE Main 2020 · MathsMultiple choiceSingle correctEasyApplication

JEE Main 5 September 2020, Shift 1, Maths Q65

Question 65 of 75 in this shift, Maths question 15 of 25.

If the co-ordinates of two points A and B are

(\sqrt{7},0)

and

(-\sqrt{7},0)

respectively and P is any point on the conic,

9x^2+16y^2=144

, then PA + PB is equal to :

(1)16
(2)6
(3)9
(4)8Official answer

Official answer

Option 4

NTA final key (Sep 2020).

Chapter: Conic Sections
Topic: Ellipse Eccentricity
Idea tested: Focal distance property

Same idea in other shifts

Asked 5× in all

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.