The M.I. of a thin rod about a normal axis through its centre is `I`. It is bent at the centre suh that the two parts are perpendicular to each other and perpendicular to the axis. The M.I. Of the sytem about the same axis will be

Options

A. `2I`
B. `I`
C. `I//2`
D. `4I`

Answer

B

Explanation

`I=(ml^(2))/12, I=m/2((l/2)^(2))/3+m/2((l/2)^(2))/3=I`