JEE Main 2023PhysicsMathematics in PhysicsEasyMCQ

JEE Main 2023 — Mathematics in Physics Question with Solution

JEE Main 2023 (15 Apr Shift 1)

Question

A vector in x-y plane makes an angle of 30o with y-axis. The magnitude of y-component of vector is 23. The magnitude of x-component of the vector will be :

Choose an option

Show full solutionCorrect option: C
Correct answer
C2

Step-by-step explanation

The angle made by the vector on x axis is 

θ=90°-30°=60°

Let the vector be a→.

It is given that

 ay=23⇒asin60°=23⇒a32=23⇒a=4

x component is ax=acos60°⇒ax=4×12=2

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About this question

This is a previous-year question from JEE Main 2023, 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.