A proton and an electron enter a uniform magnetic field with same velocity perpendicular to field. Which has larger radius? MCQ with Answer and Explanation

A proton and an electron enter a uniform magnetic field with same velocity perpendicular to field. Which has larger radius?
A. Same
B. Electron
C. Proton
D. Depends on charge
Answer: Option C
Solution (By JKSSB Mock Tests)
r = mv/(qB). Proton mass >> electron mass, so radius larger.

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