The time period of viberation of two mag...

The time period of viberation of two magnets in sum position (magnets placed with similar poles on one sides one above the other) is 3s. When polarity of weaker magnet is reversed the combination makes 12 oscillations per minutes. What is the ratio of magnetic moments of two magnets?

`(17)/(8)`

`(13)/(8)`

`(1)/(4)`

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