JEE Main 2019MathematicsVector AlgebraEasyMCQ

JEE Main 2019 — Vector Algebra Question with Solution

JEE Main 2019 (10 Jan Shift 2)

Question

Let α→=λ-2 a→+b→ and β→=4λ-2 a→+3b→, be two given vectors where vectors a→ and b→ are non-collinear. The value of λ for which vectors α→ and β→ are collinear, is:

Choose an option

Show full solutionCorrect option: A
Correct answer
A-4

Step-by-step explanation

∵α→, β→ are collinear then, λ-24λ-2=13⇒λ=-4.

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About this question

This is a previous-year question from JEE Main 2019, covering the Vector Algebra chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.