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JEE Main 2024 — Mathematics in Physics Question with Solution

JEE Main 2024 (30 Jan Shift 2)

Question

A vector has magnitude same as that of A→=3j^+4j^ and is parallel to B→=4i^+3j^. The x and y components of this vector in first quadrant are x and 3 respectively where x=____.

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Show full solutionCorrect answer: 4
Correct answer
4

Step-by-step explanation

Magnitude of vector A→=32+42=5

Now, unit vector along B→=(4i^+3j^)42+32=45i^+35j^

Now, N→=A→B^=5×45i^+35j^=4i^+3j^

∴x=4

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About this question

This is a previous-year question from JEE Main 2024, covering the Mathematics in Physics chapter of Physics. 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.