Which of the following materials which lack permanent magnetic dipoles ?
A
diamagnetic
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B
ferromagnetic
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C
semimagnetic
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D
none of the above
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Solution
The correct option is A diamagnetic Materials which lack permanent magnetic dipoles are called diamagnetic. Unlike a ferromagnet, a diamagnet is not a permanent magnet. Its magnetic permeability is less than μ0 (the permeability of free space).