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
$\mathrm{M}_{\mathrm{A}} / \mathrm{M}_{\mathrm{B}}$ ot the magnets will be
$\mathrm{M}_{\mathrm{A}} / \mathrm{M}_{\mathrm{B}}$ ot the magnets will be
- A$1 / 2$
- B$2$
- ✓$4$
- D$1 / 4$
Answer: C.
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