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An oil drop having a mass 4.8xx10^(-10)g...

An oil drop having a mass `4.8xx10^(-10)`g. and charge `2.4xx10^(-18)`C stand still between two charged horizontal plates seperated by a distance of `1cm`. If now the polarity of the plates is changed the instantaneous acceleration of the drop is `("in" ms^(2)),(g=10ms^(-2))`

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