A body of mass 1g and carrying a charge ...

A body of mass 1g and carrying a charge `10^(-8)`C passes from two points P and Q. P and Q are at electric potentials 600 V and 0 V respectively. The velocity of the body at Q is 20 `cms^(-1)`. It velocity in `ms^(-1)`at P is

`sqrt(0.028)`

`sqrt(0.056)`

`sqrt(0.56)`

`sqrt(5.6)`

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