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PhysicsJEE Main 24 Jan 2026, Shift 2·Q24·Numerical·Easy–moderate

Rotational Motion · Moment of inertia

A uniform solid cylinder of length LL and radius RR has moment of inertia about its axis equal to I1I_1. A small concentric cylinder of length L/2L/2 and radius R/3R/3 carved from this cylinder has moment of inertia about its axis equal to I2I_2. The ratio I1/I2I_1/I_2 is .
We corrected a printing error in the original paper

Source printed “A small co-centric cylinder” and “about its axis equals to I2I_2”.

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