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Questions  

The M.I of a thin circular disc about a tangent in the same plane of disc is I. Then M.I. about one of the diameters is

a
0.2 I
b
0.8 I
c
1.25 I
d
2.5 I

detailed solution

Correct option is A

I=54MR2                 I1=MR24=I5=0.2I

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