A paramagnetic material is placed in a magnetic field. Consider the following statements:- (A) If the magnetic field is increased, the magnetisation is increased. (B) If the temperature is increased, the magnetisation is increased.

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KollegeApply · Accepted Answer

A is true but B is false. If the magnetic field is increased, magnetisation of paramagnetic material placed in magnetic field is also increases. Hence, option (a) is correct. Magnetization (I) is given by, \overrightarrow{I} = \frac{\overrightarrow{M}}{V} As the temperature is increased, magnetic moments of paramagnetic material becomes more randomly aligned due to incresed thermal motion. This leads decrease in the magnetization I.

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