Pathfinder Rotation MCQ 8

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Q.8

A toy "roly-poly" consists of two rigidly attached hollow uniform plastic balls. The upper and the lower balls are of radii 6 cm and 9 cm respectively. A small load of mass 250 g is glued at the bottom of the lower ball. This toy has a property that if it is tilted to one side by any angle and then set free, it oscillates and finally settles in vertical orientation. Which of the following statements are correct ?