JEE Main 2018 — Magnetic Effects of Current Question with Solution
JEE Main 2018 (08 Apr)
Question
An electron, a proton and an alpha particle having the same kinetic energy are moving in circular orbits of radii respectively in a uniform magnetic field B. The relation between is:
Choose an option
Show full solutionCorrect option: C
Correct answer
C
Step-by-step explanation
. For electron, Where, is the mass of an electron. the mass of a proton. For alpha particles, , charge on proton. For proton, , so, .
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This is a previous-year question from JEE Main 2018, 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.