Doubt from capacitors

A capacitor of capacitance C is charged to potential V and then isolated. A capacitor C' is then charged from C, discharged and charged again; the process is repeated n times. Due to this potential of C is decreased to V'.Then value of C' is ?

**how to do its by using KVL equation...I got the charge in the capacitor C after charging first time.. but how to get the new charge on the capapcitor 2 nd time charging by KVL

please help @Shwetanshu_2018 bhaiya

Is this the answer???

maybe this would help :blush:

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