A parallel plate capacitor is charged by a battery after charging the capacitor, battery is disconnected and decrease the distance between the plates then which following statement is correct ?

A parallel plate capacitor is charged by a battery after charging the capacitor, battery is disconnected and if a dielectric plate is inserted between the place of plates. Then which one of the following statements is not correct :

A parallel plate condenser is charged by connected it to a battery. The battery is disconnected and a glass slab is introduced between the plates. Then

A parallel plate condenser is charged by connected it to a battery. The battery is disconnected and a glass slab is introduced between the plates. Then