Let the moment of inertia of a hollow cylinder of length 30 cm (inner radius 10 cm and outer radius 20 cm). about its axis be I. The radius of a thin cylinder of the same mass such that its moment of inertia about its axis is also I, is:

a. |
12 cm |
b. |
18 cm |

c. |
16 cm |
d. |
14 cm |

Let the moment of inertia of a hollow cylinder of length 30 cm (inner radius 10 cm and outer radius 20 cm). about its axis be I. The radius of a thin cylinder of the same mass such that its moment of inertia about its axis is also I, is:

a. |
12 cm |
b. |
18 cm |

c. |
16 cm |
d. |
14 cm |

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