Simple logic! !!
Two uniform circular discs of same weight and thickness are made of metals having different densities. Which disc, if either will have larger moment of inertia?
1) Both discs will have same moment of inertia
2) Disc with smaller density will have larger moment of inertia
3) Disc with larger density will have larger moment of inertia
4) Data inadequate
The answer is 2.
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1 solution
The one with smaller density will have larger radius and subsequently more moment of inertia.
P.S You should've made it MCQ, now we have 4 options and 3 tries.