MHT CET 2022 Physics question

An electron and a proton having same momenta enter perpendicular into a magnetic field then

(A)they will move undeflected
(B)curved path of electron and proton will be same.(Neglect sense of revolution)Correct
(C)curved path of electron is more curved than proton
(D)path of the proton is more curved

Answer: (B)

Solution

A charged particle entering perpendicular to a magnetic field moves in a circle with . The electron and proton have the same momentum , the same magnitude of charge and the same , so they have the same radius of

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Question ID VK-096906