Three identical bars A, B and C are made of different magnetic materials. When kept in a uniform magnetic…

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 follows:


Make the correspondence of these bars with their material being diamagnetic ( $\mathrm{D})$, ferromagnetic (F) and paramagnetic $(\mathrm{P})$ :
  1. $\mathrm{A} \leftrightarrow \mathrm{D}, \mathrm{B} \leftrightarrow \mathrm{P}, \mathrm{C} \leftrightarrow \mathrm{F}$
  2. $\mathrm{A} \leftrightarrow \mathrm{F}, \mathrm{B} \leftrightarrow \mathrm{D}, \mathrm{C} \leftrightarrow \mathrm{P}$
  3. $\mathrm{A} \leftrightarrow \mathrm{P}, \mathrm{B} \leftrightarrow \mathrm{F}, \mathrm{C} \leftrightarrow \mathrm{D}$
  4. $\mathrm{A} \leftrightarrow \mathrm{F}, \mathrm{B} \leftrightarrow \mathrm{P}, \mathrm{C} \leftrightarrow \mathrm{D}$

Solution

Diamagnetic materials are repelled in an external magnetic field. Bar $B$ represents diamagnetic materials.

Asked in: JEE Main 2014 (11 Apr Online)

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