Question

Magnetic susceptibility of a diamagnetic substance

• A. decreases with temperature
• B. is not affected by temperature
• C. increases with temperature
• D. first increases then decreases with temperature

Answer 1

The correct option is A decreases with temperature

Magnetic materials may be classified as diamagnetic, paramagnetic or ferromagnetic on the basis of their susceptibilities. Diamagnetic materials, such as bismuth, when placed in an external magnetic field, partly expel the external field from within themselves and, if shaped like a rod, line up at right angles to a nonuniform magnetic field. Diamagnetic materials are characterized by constant, small negative susceptibilities, only slightly affected by changes in temeprature.