A proton of mass m and charge e is projected from a very large distance towards an a particle with velocity v Initially a

Question

A proton of mass m and charge e is projected from a very large distance towards an a particle with velocity v Initially a particle is at rest but it is free to move If gravity is neglected then the minimum separation along the straight line of their motion will be 1 4 mv 3 2e 4 mv 2 5e 4 mv 4 4e 4 mv

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