Centre of Mass & Rotational Motion · JEE Advanced previous year questions

2025 2 questions

1. Q192025 · 18 May 2025 · Paper 2
   
   1. A.2
   2. B.$\sqrt{2}$
   3. C.$\sqrt{\frac{5}{2}}$
   4. D.$\sqrt{\frac{2}{5}}$
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   Answer: C

2. Q252025 · 18 May 2025 · Paper 2· Numerical answer

   A conducting solid sphere of radius $R$ and mass $M$ carries a charge $Q$. The sphere is rotating about an axis passing through its center with a uniform angular speed $\omega$. The ratio of the magnitudes of the magnetic dipole moment to the angular momentum about the same axis is given as $\alpha \frac{Q}{2M}$. The value of $\alpha$ is ____

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   Answer: 1.65 to 1.67