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A positively-charged particle (alpha-par...

A positively-charged particle (alpha-particle) projected towards west is deflected towards north by a magnetic field. The direction of magnetic field is
(a) towards south (b) towards east
(c ) downward (d) upward

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Direction of current is also towards west and force is towards north, then using Fleming.s left hand rule, the direction of magnetic field is upwards.
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