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A uniform smooth rod (mass `m` and length `l`) placed on a smooth horizontal floor is hit by a particle (mass `m`) moving on the floor, at a distance `l/4` from one end elastically `(e = 1)`. The distance travelled by the centre of the rod after the collision when it has completed three revolutions will be

A

`2pil`

B

`3pil`

C

`pil`

D

`4pil`

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The correct Answer is:
A
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