An $α$ -particle moves from east to west in a magnetic field perpendicular to the plane of the paper and into the paper. The particle is deflected towards:

East

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West

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South

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North

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Solution

The correct option is C South
Velocity is in negative x direction and B is negative z direction. Then using the Fleming's left hand rule, we get the direction of deflection in negative y direction i.e. towards south.

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An α-particle moves from east to west in a magnetic field perpendicular to the plane of the paper and into the paper. The particle is deflected towards:

The correct option is C SouthVelocity is in negative x direction and B is negative z direction. Then using the Fleming's left hand rule, we get the direction of deflection in negative y direction i.e. towards south.

An $α$ -particle moves from east to west in a magnetic field perpendicular to the plane of the paper and into the paper. The particle is deflected towards:

The correct option is C South
Velocity is in negative x direction and B is negative z direction. Then using the Fleming's left hand rule, we get the direction of deflection in negative y direction i.e. towards south.