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Saturday, 31 October

JEE Main 2021 · MathsNumerical answerNumerical valueHardMulti-step

JEE Main 17 March 2021, Shift 2, Maths Q88

Question 88 of 90 in this shift, Maths question 28 of 30, Section B.

Let P be an arbitrary point having sum of the squares of the distances from the planes x+y+z=0x+y+z=0, lx−nz=0lx-nz=0 and x−2y+z=0x-2y+z=0, equal to 9. If the locus of the point P is x2+y2+z2=9x^2+y^2+z^2=9, then the value of l−nl-n is equal to __________.

Official answer

0

NTA final key.

Chapter
Three Dimensional Geometry
Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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.