A solid sphere and thin walled hollow sphere have same mass and same material. Which of them have greater moment of inertia about their diameter?
[ \(\mathrm{I}_{\mathrm{h}}=\) moment of inertia of hollow sphere about an axis coinciding with its diameter, \(\mathrm{I}_{\mathrm{s}}=\) moment of inertia of solid sphere about an axis coinciding with its diameter]

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.