Question

At a temperature of ${30}^o$ C if the susceptibility of ferromagnetic material is found to be $\chi$. Its susceptibility at ${333}^0$C is :

• A. $\chi$
• B. $\frac{\chi }{2}$
• C. $2\chi$
• D. $11.1\chi$

Answer 1

Answer: (B)

$\frac{\chi }{2}$

$T_1={30}^{\circ }C$ $=303K$, $T_2=606K$, $\chi =\frac{c{\mu }_0}{T}$
$\chi T=constant$
${\chi }_1{T}_1={\chi }_2{T}_2$
$\chi$ $303=$ ${\chi }_2$ $606$
${\chi }_2=\frac{\chi }{2}$