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The following figure shows the variation...

The following figure shows the variation of intensity of magnetisation with the applied magnetic field intensity for three magnetic materials X, Y and Z. Identify the materials X, Y and Z.

Text Solution

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The slope of M-H graph measures the magnetic susceptibility, which is `X_(m) = (M)/(H)`
Material X : Slope is positve and larger value So, it is a ferromagnetic material .
Material Y : Slope is positive and lesser value than X So, it could be a parmagnetic material.
Material Z Slope is negative and hence, it is a diamagnetic material .
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