Statement-I: Susceptibilities of paramagnetic and ferromagnetic substances increase with decrease in temperature

Question

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 motion of electrons developing magnetic moments opposite to the applied magnetic field.

Choose the CORRECT answer from the options given below:

Smart Achievers · Accepted Answer

(1)

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

The same is applicable for ferromagnet & the relation is given as $X = \frac{C}{T - T_{C}}$ ( $T_{C}$ is Curie’s Temperature)

Diamagnetism is due to non-cooperative behaviour of orbiting electrons when exposed to external magnetic field.

Solution

1 Both statement-I and statement-II are true.

2 Both statement-I and statement-II are false.

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

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

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