JEE Main 2022PhysicsMagnetic Effects of CurrentEasyMCQ

JEE Main 2022Magnetic Effects of Current Question with Solution

JEE Main 2022 (25 Jul Shift 1)

Question

Two charged particles, having same kinetic energy, are allowed to pass through a uniform magnetic field perpendicular to the direction of motion. If the ratio of radii of their circular paths is 6:5 and their respective masses ratio is 9:4. Then, the ratio of their charges will be

Choose an option

Show full solutionCorrect option: B
Correct answer
B5:4

Step-by-step explanation

Radius of charged particle moving in circular path R=2mKqB, here, B is magnetic field and K is kinetic energy.

So, q=2mKRB

Now, ratio of the charges is q1q2=m1 m2×R2R1=94×56=54

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About this question

This is a previous-year question from JEE Main 2022, covering the Magnetic Effects of Current 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.