A particle of charge 1 mu C & mass 1 g...

A particle of charge ` 1 mu C & ` mass `1 g` moving with a velocity of ` 4 m//s` is subjected to a uniform electric field of magnitude ` 300 V m` for ` 10 sec`. Then it's final speed cannot be :

0.5 m/s

4 m/s

3 m/s

6 m/s

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