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Magnetism And Matter — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsMagnetism And Matter1 Mark
MCQ
Find the true statement.
  • A
    Most of the substances show ferromagnetism.
  • ✓
    The magnetic susceptibility of diamagnetic substances are temperature independent.
  • C
    Water is paramagnetic in nature.
  • D
    Typical domain size of a ferromagnetic material is $1nm.$
✓

Answer

Correct option: B.
The magnetic susceptibility of diamagnetic substances are temperature independent.
The magnetic susceptibility of diamagnetic materials doesn’t depend upon temperature. This is often because there’s an outsized barrier between the bottom state and therefore the excited states of diamagnetic substances. Hence, it remains constant during the change of temperature. All the other statements are false.

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