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Two equal metal bells are charged to 10 ...

Two equal metal bells are charged to 10 and -20 units of electricity. Then, they are brought in contact with each other and then again separated to original distance. The ratio of magnitude of force between the two balls before and after contact is :

A

`8:1`

B

`1:8`

C

`1:2`

D

`2:1`

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The correct Answer is:
A
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