Answer: 3:5.
- A 5:3
- B 1:1
- C 2:3
- D 3:5
Correct answer: D. 3:5
Explanation: Solid sphere I = (2/5)MR<sup>2</sup>, hollow sphere I = (2/3)MR<sup>2</sup>. Ratio = (2/5):(2/3) = 3:5.
Torque about axis O equals the force F multiplied by the perpendicular distance r⊥ from the axis to the line of action of the force, producing rotation.
Concept context
Moment of inertia, torque, angular momentum, rolling motion. Very high JEE weightage.
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