Two loops P and Q are made from a uniform wire. The radii of P and Q are r1 and r2 respectively, and their moments of inertia are l1 and l2 respectively. If l2/l1=4 then r2/r1 equals (a) 42/3 (b) 41/3 (c) 4-2/3 (d) 4-1/3 Ans. b (18) Read More