question_answer

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)  C is of a diamagnetic material

B)  D is of a ferromagnetic material

C)  A is of a non-magnetic material

D)  B is of a paramagnetic material