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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