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A charged particle of mass "4gm" and hav...

A charged particle of mass "4gm" and having a charge "+1 `mu` C" is fired from a point with speed "10m/s" ,where electric potential is "`4times10^(5)`V" in the direction,where electric potential is decreasing,find the potential at a point (in volts) where its speed becomes "`10sqrt(2)`m/s" .Express your answer in multiple of "`10^(5)`" ."]

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