M.I. of a thin ring (external diameter D , internal diameter d ) about – McqOptions

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1.	M.I. of a thin ring (external diameter D , internal diameter d ) about an axis perpendicular to the plane of the ring, is
A.	( D 4 + d 4 )
B.	( D 4 - d 4 )
C.	( D 4 + d 4 )
D.	( D 4 x d 4 ).
Answer» C. ( D 4 + d 4 )

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