Question

The ratio of the moments of inertia of two spheres about their diameter and having same mass and their radii in the ratio of \( 1: 2 \) is:

1. \( 2: 1 \) 

2. \( 4: 1 \) 

3. \( 1: 2 \) 

4. \( 1: 4 \)

Answer 1

moment of inertia is l=mvr

 so, l is directly perportional to r

L₁/L₂=r₁/r₂=1/2

so answer is 1/2