AIIMS2010PhysicsMagnetic Properties of Matter
Which of the following is true regarding dimagnetic substances (symbols have their usual meaning)
Options
- A_r>1, _m>1
- B_r>1, _m < 1
- C_r < 1, _m < 0
- D_r 0
Correct answer
C. _r < 1, _m < 0
Step-by-step solution
Relative magnetic permeability of diamagnetic substances is always less than unity. i.e. _r < 1 _r= (1+ _m ) as _r < 1, _m is negative. Hence, susceptibility of diamagnetic substances has a small negative value.