A charged particle enters a uniform magnetic field initially travellin – InterviewSolution

1.	A charged particle enters a uniform magnetic field initially travelling perpendicular to the field lines and is bent in a circular arc of radius R. If the particle had the same charge but double the mass and were travelling twice as fast, the radius of its circular arc would be (A) 2R (B) 4R (C) R (D) R.
Answer» Correct option is (B) 4R

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