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  4. The intensity of magnetisation I is plotted against the magnetising field H for different substances. The curves A and B shown in the adjoining figure are associated with :- <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-jj5uvf4g2nb6mgzk.jpg />

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Q. The intensity of magnetisation $I$ is plotted against the magnetising field $H$ for different substances. The curves $A$ and $B$ shown in the adjoining figure are associated with :-
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NTA AbhyasNTA Abhyas 2020

Solution:

Steel has large coercivity than soft iron.