Question: Q. 11. Out of the two magnetic materials, ’ $A$ ’ has relative permeability slightly greater than unity while ’ $B$ ’ has less than unity. Identify the nature of the materials ’ $A$ ’ and ’ $B$ ‘. Will their susceptibilities be positive or negative?
U [Delhi I, II, III 2014]
Solution:
Ans. A : Paramagnetic
B : Diamagnetic
Susceptibility :
For A : positive
$1 / 2$
For B : negative [CBSE Marking Scheme 2014] 11/2
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