Question: Q. 13. The given graphs show the variation of intensity of magnetisation I with strength of applied magnetic field $H$ for two magnetic materials $P$ and $Q$.
(i) Identify the materials $P$ and $Q$.
(ii) For material $P$, plot the variation of intensity of magnetisation with temperature. Justify your answer.
U] [CBSE SQP 2014]
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Solution:
Ans. (i) $P$ : Paramagnetic material
(ii) $Q$ : Ferromagnetic material
In paramagnetic materials, $I$ decreases with temperature as, $I \propto \frac{H}{T}$,
where, $H$ is the magnetising field.
[CBSE Marking Scheme, 2014]
Short Answer Týpe Questions-II
(3 marks each)
