Q.
Which of the following is incorrect
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a
Lesser area of hysteresis loop indicates lesser loss of heat
b
Hysteresis loop is not shown by diamagnetic substance
c
Curie temperature is the temperature above which ferromagnetic material becomes diamagnetic material
d
Water, NaCl and lead all are the examples of diamagnetic substances
answer is C.
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Detailed Solution
Above curie temperature ferromagnetic substances behaves as paramagnetic substances
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