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A point charge +q0 is projected in a mag...

A point charge `+q_0` is projected in a magnetic field `vec B= (hat i+2 hat j-3hat k)`. If acceleration of the particle is `vec a= ( 2hat i+b hat j-hat k)` then value of b will be

A

1

B

`1/2`

C

2

D

`3/2`

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