The position of the centre of mass of a uniform semi-circular wire of radius $'R'$ placed in $x-y$ plane with its centre at the origin and the line joining its ends as $x$-axis is given by $\left(0, \frac{x R}{\pi}\right)$.

Then, the value of $|x|$ is ...... .

  • [JEE MAIN 2021]
  • A

    $2$

  • B

    $4$

  • C

    $36$

  • D

    $8$

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  • [JEE MAIN 2022]

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