NEET Physics · Easy

System of Particles & Rotational Motion: Moment of Inertia Mixed MCQ

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Moment of Inertia MixedEasyQuestion 6189

Question

MI of a thin disc (M, R) about axis through centre in plane of disc:
  1. A
    MR²
  2. B
    MR²/4
    Correct
  3. C
    MR²/2
  4. D
    2MR²

Correct answer

MR²/4

Explanation

By perpendicular axis theorem: MR²/2 = 2I_d. I_d = MR²/4.