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WAEC Physics 2010 Paper

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Question : 42

Total: 50

In order to prevent bar magnets from losing their strength, they are stored wih keepers such that the two bars are placed with

like poles facing each other and the keepers placed between them
like poles facing each other and the keepers placed between them
unlike poles facing each other and the keepers placed at their ends
unlike poles facing each other and the keepers placed between them

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