Q .     Two short bar magnets with magnetic moments `400\ abA/cm^2` and `800\ abA/cm^2` are placed with their axis in the same straight line with similar poles facing each other and with their centres at `20\ cm` apart from each other. Then the force of repulsion is:

Disclaimer: No option as `0.08\ dyn e` was given in the original paper.

UPSEE 2015
A

`12\ dyn e`

B

`6\ dyn e`

C

`0.08\ dyn e`

D

`150\ dyn e`

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