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Two identical metal spheres having charg...

Two identical metal spheres having charges +q and +q respectively. When they are separated by distance r, exerts force of repulsion F on each other. The spheres are allowed to touch and then moved back to same separation. The new force of repulsion will be

A

`F/2`

B

F

C

`F/4`

D

`F/10`

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The correct Answer is:
B
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