In a region of space a magnetic field B→=2i^ T exists. A particle carrying a charge Q=+1 μC is projected from the origin with velocity V→=(2i^+j^) x 106 m/s. If mass of the particle is 1 gm, then just after projection its acceleration is

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-2000k^ m/s2

-1500i^ m/s2

+200j^ m/s2

+500i^ m/s2

answer is A.

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Detailed Solution

F→=QV→ x B→=1 x 10-62i^+j^ x 106 x 2i^ N=-2k^ N∴a→=F→m=-2k^10-3 m/s2=-2000k^ m/s2

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