Two charged particles 1 and 2 with same velocity, enter a region of uniform magnetic field in a direction perpendicular to the field. If the particles have the same mass, then

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1 is positively charged and 2 is negatively charged.

magnitude of charge of 1 is less than the magnitude of charge of 2

magnitude of charges of both particles are the same.

1 is negatively charged and 2 is positively charged.

answer is D.

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Detailed Solution

Force on charged particle moving in magnetic field is given byF→=QV→×B→. This force is the centripetal force. Therefore 1 must carry negative charge and 2 must carry positive charge.Also trajectories of the particles are circular with radius of curvature γ=VmQBi. Since r1Q2.

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