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Two particles , each of mass m and charg...

Two particles , each of mass m and charge q, are attached to the two ends of a light rigid rod of length 2 R . The rod is rotated at constant angular speed about a perpendicular axis passing through its centre. The ratio of the magnitudes of the magnetic moment of the system and its angular momentum about the centre of the rod

A

`q/(2m)`

B

`q/m`

C

`(2q)/m`

D

`q/(pim)`

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