Magnetic field due to currentHard

Question

Proton, Deuteron and alpha particle of the samekinetic energy are moving in circulartrajectories in a constant magnetic field. Theradii of proton, deuteron and alpha particle arerespectively rp, rd and rα. Which one of thefollowing relations is correct ?

Options

A.rα = rd > rp
B.rα = rd = rp
C.rα = rp < rd
D.rα > rd > rp

Solution

As K & B are constant
So



⇒ rα = rp < rd 

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