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  • The relative permeability of a substance A is slightly greater than unity while that of a substance B is slightly less than unity. ThenOption: 1</stron

The relative permeability of a substance A is slightly greater than unity while that of a substance B is slightly less than unity. Then

Option: 1

A is ferromagnetic and B paramagnetic


Option: 2

A is diamagnetic and B paramagnetic


Option: 3

A is paramagnetic and B diamagnetic
 


Option: 4

A and B are both ferromagnetic


Answers (1)

best_answer

Susceptibility (\chi)  of a paramagnet is small and positive and of a diamagnet is small and negative. Now relative permeability
\mathrm{\mu_r=1+\chi }
Hence \mathrm{\mu_r }  is slightly greater than unity for a paramagnet and slightly less than unity for a diamagnet. Hence the correct choice is (c).

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