If D and d are external and internal diameters of a circular shaft respectively, its polar moment of inertia, is

If D and d are external and internal diameters of a circular shaft res

1.	If D and d are external and internal diameters of a circular shaft respectively, its polar moment of inertia, is
A.	[A].
B.	[B].
C.	[C].
D.	[D].
Answer» E.

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If D and d are external and internal diameters of a circular shaft respectively, its polar moment of inertia, is

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