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A thin rod of length L is lying along th...

A thin rod of length L is lying along the x-axis with its ends at x=0 and x=L its linear (mass/length) varies with x as `k(x/L)^n`, where n can be zero of any positive number. If to position `x_(CM)` of the centre of mass of the rod is plotted against 'n', which of the following graphs best apporximates the dependence of `x_(CM)` on n?

A

B

C

D

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The correct Answer is:
B
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