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The charges on two spheres are + 7 much ...

The charges on two spheres are + 7 `much` and `-5muc` respectively. They experience a force F. If each of them is given an additional charge of `-2muc`,the new force of attraction will be :

A

F

B

`F/2`

C

`F/sqrt3`

D

2F

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The correct Answer is:
A
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