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MHT CET20243 May 2024Morning ShiftPhysicsMagnetic Effects of CurrentActual

A magnetic needle of magnetic moment 6 10⁻² Am ^2 and moment of inertia 9.6 10⁻⁵ ~kg ~m ^2 performs simple harmonic motion in a magnetic field of 0.01 T . Time taken to complete 10 oscillations is [Take =3 14 ]

Options

  1. A0.2512 s
  2. B2.512 s
  3. C25.12 s
  4. D251 2 ~s

Correct answer

C. 25.12 s

Step-by-step solution

Period of oscillation T=2 I MB aligned & =2 9.6 10⁻⁵ 6 10⁻² 0.01 & =2.512 ~s aligned Time taken for 10 oscillations =2.512 10=25.12 ~s

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