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A chain of uniform mass m and length L i...

A chain of uniform mass `m` and length `L` is held on a frictionless table in such a way that its `(1)/(n)`th part is hanging below the edge of table. The work done to pull the hanging part of chain is `:-`

A

`sqrtn`

B

`n`

C

`n^(-3)`

D

`n^(-2)`

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The correct Answer is:
D
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