Question

Three identical bars A, B and C are made of different magnetic materials. When kept in a uniform magnetic field, the field lines around them look as given in the figure . Make the correspondence of these bars with their material being diamagnetic (D), ferromagnetic (F) and paramagnetic (P) .

• A. $A\leftrightarrow F,B\leftrightarrow D,C\leftrightarrow P$
• B. $A\leftrightarrow D,B\leftrightarrow P,C\leftrightarrow F$
• C. $A\leftrightarrow F,B\leftrightarrow P,C\leftrightarrow D$
• D. $A\leftrightarrow P,B\leftrightarrow F,C\leftrightarrow D$

Answer 1

The correct option is A $A\leftrightarrow F,B\leftrightarrow D,C\leftrightarrow P$

Magnet A is allowing all the field lines passing through it , therefore it is ferromagnetic.
Magnet B is repelling the field lines therefore it is diamagnet.
Magnet C is attracting the field lines therefore it is paramagnet.