Q. 15

# Let I_{1} and I_{2} be the moments of inertia of two bodies of identical geometrical shape, the first made of aluminum and the second of iron.

A. I_{1} < I_{2}

B. I_{1} = I_{2}

C. I_{1} > I_{2}

D. relation between I_{1} and I_{2} depends on the actual shapes of the bodies.

Answer :

Density of iron is 7.874 g/cm^{3} and aluminum is 2.74 g/cm^{3}.

Hence I_{1} <I_{2}

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