kind of same but different...

1. suppose the potential difference b/w the plates of a capacitor is increased by 20% , the energy stored in capacitor increases exactly by -----------
2.if the potential difference b/w the plates of a capacitor is increased by 0.1% , the energy stored in the capacitor also increases nearly by -----------
Pls post ur final ans , so that i can check with mine.
this has to solved in different methods....