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The correct definition of Meissner effect is
(a)The phenomenon of perfect paramagnetism in super conductors
(b)The phenomenon of perfect diamagnetism in super conductors
(c)The phenomenon of perfect diamagnetism in semi conductors
(d)The phenomenon of ferromagnetism in metals

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Important Questions on Matter and Magnetism
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The magnetic properties of a magnet is lost at it's

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Electromagnets are made of soft iron because, soft iron has
