Q. There are four light-weight-rod samples, $A,\ B,\ C,D$ separately suspended by threads. A bar magnet is slowly brought near each sample and the following observations are noted (i) $A$ is feebly repelled (ii) $B$ is feebly attracted (iii) $C$ is strongly attracted (iv) $D$ remains unaffected Which one of the following is true
A) $A$ is of a non-magnetic material
B) $B$ is of a paramagnetic material
C) $C$ is of a diamagnetic material
D) $D$ is of a ferromagnetic material
Explanation
(b) Diamagnetic will be feebly repelled. Paramagnetic will be feebly attracted. Ferromagnetic will be strongly attracted
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.