[" 9.From a uniform wire,two circular loops are made "],[P" of radius "r" and (ii) "Q" of radius "nr" .If the moment "],[" inertia of "Q" about an axis passing through its center and "],[" perpendicular to its plane is "8" times that of "P" about "],[" similar axis,the value of "n" is (diameter of the wire is "sqrt(x)" ,"],[" much smaller than "r" or "nr)],[[" (1) "8," (2) "6],[" (3) "4," (4) "2]]