Two magnets $A$ and $B$ are identical in mass, length and breadth but have different magnetic moments. In a vibration magnetometer, if the time period of $B$ is twice the time period of $A$. The ratio of the magnetic moments $M_{A}/M_{B}$ of the magnets will be

Question

Dr. Abubacker · Accepted Answer

(c) $T = 2\pi\sqrt{\frac{1}{MB_{H}}} \Rightarrow T \propto \frac{1}{\sqrt{M}} \Rightarrow \frac{M_{A}}{M_{B}} = \left( \frac{T_{B}}{T_{A}} \right)^{2} = \frac{4}{1}$

Q. Two magnets $A$ and $B$ are identical in mass, length and breadth but have different magnetic moments. In a vibration magnetometer, if the time period of $B$ is twice the time period of $A$. The ratio of the magnetic moments $M_{A}/M_{B}$ of the magnets will be

Explanation

Reviewed by Dr. Abubacker

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