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The plates of a parallel plate capacitor...

The plates of a parallel plate capacitor are charged up to `100 v`. Now, after removing the battery, a `2 mm` thick plate is inserted between the plates Then, to maintain the same potential deffernce, the distance betweem the capacitor plates is increase by `1.6 mm`. The dielectric canstant of the plate is .

A

5

B

1.25

C

4

D

2.5

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The correct Answer is:
A
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