railway RRB JE (CBT I + CBT II) Mock Test 2024 Physics Magnetism and Maxwell's Equations Magnetic Materials
Which of the statement is are incorrect?
1
A material is diamagnetic if susceptibility χ is negative.
2
A material is paramagnetic if susceptibility χ is positive and small.
3
A material is ferromagnetic if susceptibility χ is large and positive.
4
None of the above.