Given below are two statements:
Statement – I : Susceptibilities of paramagnetic and ferromagnetic substances increase with decrease in temperature.
Statement – II: Diamagnetism is a result of orbital motions of electrons developing magnetic moments opposite to the applied magnetic field.
Choose the CORRECT answer from the options
given below : -

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Both statement – I and statement -II are true.

Both statement – I and Statement – II are false.

Statement – I is true but statement – II is false.

Statement-I is false but Statement-II is true.

answer is A.

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Detailed Solution

According to curie's law, magnetic susceptibility is inversely proportional to temperature for a fixed value of external magnetic field i.e. $χ = \frac{C}{T}$ .

The same is applicable for ferromagnet & the relation is given as $χ = \frac{C}{T - T_{C}} (T_{C}$ is curie temperature) Diamagnetism is due to non-cooperative behaviour of orbiting electrons when exposed to external magnetic field.

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