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A circular disc of radius R is removed f...

A circular disc of radius `R` is removed from a bigger circular disc of radius `2 R` such that the circumferences of the discs coincide. The center of mass of new disc is `alpha R` from the center of the bigger disc. The value of `alpha` is

A

`1/3`

B

`1/2`

C

`1/6`

D

`1/4`

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The correct Answer is:
A
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